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.\" Copyright (c) 2002 Andries Brouwer <aeb@cwi.nl>
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.\"
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.\" Permission is granted to make and distribute verbatim copies of this
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.\" manual provided the copyright notice and this permission notice are
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.\" preserved on all copies.
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.\"
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.\" Permission is granted to copy and distribute modified versions of this
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.\" manual under the conditions for verbatim copying, provided that the
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.\" entire resulting derived work is distributed under the terms of a
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.\" permission notice identical to this one.
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2007-06-21 22:55:04 +00:00
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.\"
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2004-11-03 13:51:07 +00:00
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.\" Since the Linux kernel and libraries are constantly changing, this
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.\" manual page may be incorrect or out-of-date. The author(s) assume no
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.\" responsibility for errors or omissions, or for damages resulting from
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.\" the use of the information contained herein. The author(s) may not
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.\" have taken the same level of care in the production of this manual,
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.\" which is licensed free of charge, as they might when working
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.\" professionally.
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2007-06-21 22:55:04 +00:00
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.\"
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2004-11-03 13:51:07 +00:00
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.\" Formatted or processed versions of this manual, if unaccompanied by
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.\" the source, must acknowledge the copyright and authors of this work.
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.\"
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2007-10-23 14:48:10 +00:00
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.\" 2007-10-23 mtk Added intro paragraph about section, plus a paragraph
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.\" about exit status values.
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.\"
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2007-11-15 03:21:33 +00:00
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.TH INTRO 1 2007-11-15 "Linux" "Linux User's Manual"
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2004-11-03 13:51:07 +00:00
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.SH NAME
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intro.1, add_key.2, get_mempolicy.2, get_thread_area.2, intro.2, keyctl.2, mbind.2, request_key.2, set_thread_area.2, clock.3, cmsg.3, getcwd.3, getpw.3, intro.3, malloc.3, posix_memalign.3, shm_open.3, sleep.3, sysconf.3, intro.4, sd.4, intro.5, locale.5, slabinfo.5, intro.6, boot.7, bootparam.7, futex.7, glob.7, hier.7, intro.7, libc.7, locale.7, mq_overview.7, netlink.7, sem_overview.7, shm_overview.7, unix.7, intro.8: Global fix: Use consistent capitalization in NAME section
The line(s) in the NAME section should only use capitals
where English usage dictates that. Otherwise, use
lowercase throughout.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2012-10-21 06:29:13 +00:00
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intro \- introduction to user commands
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2004-11-03 13:51:07 +00:00
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.SH DESCRIPTION
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2007-10-23 14:48:10 +00:00
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Section 1 of the manual describes user commands and tools,
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for example, file manipulation tools, shells, compilers,
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web browsers, file and image viewers and editors, and so on.
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All commands yield a status value on termination.
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This value can be tested (e.g., in most shells the variable
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.I $?
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contains the status of the last executed command)
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to see whether the command completed successfully.
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A zero exit status is conventionally used to indicate success,
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intro.1, time.1, adjtimex.2, capget.2, eventfd.2, fcntl.2, getrlimit.2, getsockopt.2, gettimeofday.2, intro.2, ioctl_list.2, ioperm.2, mlock.2, pivot_root.2, poll.2, prctl.2, ptrace.2, sched_setscheduler.2, select_tut.2, semget.2, sigaltstack.2, signalfd.2, sysctl.2, timer_settime.2, timerfd_create.2, wait.2, CPU_SET.3, argz_add.3, assert_perror.3, atexit.3, backtrace.3, bcmp.3, clearenv.3, ctime.3, dl_iterate_phdr.3, dlopen.3, ecvt.3, errno.3, error.3, ether_aton.3, exit.3, fenv.3, ferror.3, finite.3, flockfile.3, fnmatch.3, fpathconf.3, fpclassify.3, ftime.3, ftok.3, ftw.3, fwide.3, getaddrinfo.3, gethostbyname.3, getlogin.3, getnameinfo.3, getnetent.3, getopt.3, getprotoent.3, getrpcent.3, getservent.3, glob.3, hsearch.3, inet.3, isalpha.3, iswalnum.3, iswalpha.3, iswblank.3, iswcntrl.3, iswctype.3, iswdigit.3, iswgraph.3, iswlower.3, iswprint.3, iswpunct.3, iswspace.3, iswupper.3, iswxdigit.3, longjmp.3, lsearch.3, malloc.3, matherr.3, mblen.3, mbsinit.3, mbtowc.3, on_exit.3, printf.3, pthread_attr_init.3, pthread_attr_setaffinity_np.3, pthread_attr_setdetachstate.3, pthread_attr_setguardsize.3, pthread_attr_setinheritsched.3, pthread_attr_setschedparam.3, pthread_attr_setschedpolicy.3, pthread_attr_setscope.3, pthread_attr_setstack.3, pthread_attr_setstackaddr.3, pthread_attr_setstacksize.3, pthread_cancel.3, pthread_cleanup_push.3, pthread_equal.3, pthread_getattr_np.3, pthread_getcpuclockid.3, pthread_setaffinity_np.3, pthread_setcancelstate.3, pthread_setconcurrency.3, pthread_setschedparam.3, pthread_setschedprio.3, ptsname.3, putenv.3, putgrent.3, raise.3, rcmd.3, regex.3, rexec.3, rpc.3, rpmatch.3, rtnetlink.3, scandir.3, sem_init.3, setaliasent.3, setbuf.3, setenv.3, setjmp.3, signbit.3, stdio_ext.3, strtod.3, strtol.3, strtoul.3, system.3, termios.3, timeradd.3, tzset.3, ualarm.3, wctomb.3, xdr.3, st.4, tty_ioctl.4, core.5, elf.5, proc.5, bootparam.7, capabilities.7, icmp.7, ip.7, ipv6.7, math_error.7, mdoc.samples.7, mq_overview.7, pthreads.7, raw.7, regex.7, socket.7, tcp.7, tzselect.8: Global fix: s/non-zero/nonzero/
The tendency in English, as prescribed in style guides like
Chicago MoS, is towards removing hyphens after prefixes
like "non-" etc.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2010-01-16 16:40:55 +00:00
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and a nonzero status means that the command was unsuccessful.
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2007-10-23 14:48:10 +00:00
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(Details of the exit status can be found in
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.BR wait (2).)
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intro.1, time.1, adjtimex.2, capget.2, eventfd.2, fcntl.2, getrlimit.2, getsockopt.2, gettimeofday.2, intro.2, ioctl_list.2, ioperm.2, mlock.2, pivot_root.2, poll.2, prctl.2, ptrace.2, sched_setscheduler.2, select_tut.2, semget.2, sigaltstack.2, signalfd.2, sysctl.2, timer_settime.2, timerfd_create.2, wait.2, CPU_SET.3, argz_add.3, assert_perror.3, atexit.3, backtrace.3, bcmp.3, clearenv.3, ctime.3, dl_iterate_phdr.3, dlopen.3, ecvt.3, errno.3, error.3, ether_aton.3, exit.3, fenv.3, ferror.3, finite.3, flockfile.3, fnmatch.3, fpathconf.3, fpclassify.3, ftime.3, ftok.3, ftw.3, fwide.3, getaddrinfo.3, gethostbyname.3, getlogin.3, getnameinfo.3, getnetent.3, getopt.3, getprotoent.3, getrpcent.3, getservent.3, glob.3, hsearch.3, inet.3, isalpha.3, iswalnum.3, iswalpha.3, iswblank.3, iswcntrl.3, iswctype.3, iswdigit.3, iswgraph.3, iswlower.3, iswprint.3, iswpunct.3, iswspace.3, iswupper.3, iswxdigit.3, longjmp.3, lsearch.3, malloc.3, matherr.3, mblen.3, mbsinit.3, mbtowc.3, on_exit.3, printf.3, pthread_attr_init.3, pthread_attr_setaffinity_np.3, pthread_attr_setdetachstate.3, pthread_attr_setguardsize.3, pthread_attr_setinheritsched.3, pthread_attr_setschedparam.3, pthread_attr_setschedpolicy.3, pthread_attr_setscope.3, pthread_attr_setstack.3, pthread_attr_setstackaddr.3, pthread_attr_setstacksize.3, pthread_cancel.3, pthread_cleanup_push.3, pthread_equal.3, pthread_getattr_np.3, pthread_getcpuclockid.3, pthread_setaffinity_np.3, pthread_setcancelstate.3, pthread_setconcurrency.3, pthread_setschedparam.3, pthread_setschedprio.3, ptsname.3, putenv.3, putgrent.3, raise.3, rcmd.3, regex.3, rexec.3, rpc.3, rpmatch.3, rtnetlink.3, scandir.3, sem_init.3, setaliasent.3, setbuf.3, setenv.3, setjmp.3, signbit.3, stdio_ext.3, strtod.3, strtol.3, strtoul.3, system.3, termios.3, timeradd.3, tzset.3, ualarm.3, wctomb.3, xdr.3, st.4, tty_ioctl.4, core.5, elf.5, proc.5, bootparam.7, capabilities.7, icmp.7, ip.7, ipv6.7, math_error.7, mdoc.samples.7, mq_overview.7, pthreads.7, raw.7, regex.7, socket.7, tcp.7, tzselect.8: Global fix: s/non-zero/nonzero/
The tendency in English, as prescribed in style guides like
Chicago MoS, is towards removing hyphens after prefixes
like "non-" etc.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2010-01-16 16:40:55 +00:00
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A nonzero exit status can be in the range 1 to 255, and some commands
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use different nonzero status values to indicate the reason why the
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2007-10-23 14:48:10 +00:00
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command failed.
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.SH NOTES
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intro.1, time.1, accept.2, bind.2, connect.2, execve.2, flock.2, getdents.2, getpriority.2, getuid.2, intro.2, ioctl.2, mincore.2, mknod.2, personality.2, ptrace.2, read.2, recv.2, select_tut.2, send.2, sendfile.2, shmctl.2, sigaction.2, signal.2, stat.2, times.2, truncate.2, umask.2, wait.2, MB_CUR_MAX.3, MB_LEN_MAX.3, argz_add.3, btowc.3, clearenv.3, clock.3, cmsg.3, end.3, endian.3, errno.3, exit.3, fgetwc.3, fgetws.3, fopen.3, fputwc.3, fputws.3, fseek.3, fwide.3, getfsent.3, getgrnam.3, gethostid.3, getipnodebyname.3, getmntent.3, getpwnam.3, getwchar.3, grantpt.3, iconv.3, iconv_close.3, iconv_open.3, insque.3, intro.3, iswalnum.3, iswalpha.3, iswblank.3, iswcntrl.3, iswctype.3, iswdigit.3, iswgraph.3, iswlower.3, iswprint.3, iswpunct.3, iswspace.3, iswupper.3, iswxdigit.3, malloc.3, mblen.3, mbrlen.3, mbrtowc.3, mbsinit.3, mbsnrtowcs.3, mbsrtowcs.3, mbstowcs.3, mbtowc.3, mkstemp.3, mktemp.3, nl_langinfo.3, openpty.3, posix_openpt.3, printf.3, ptsname.3, putwchar.3, qecvt.3, rcmd.3, readdir.3, rexec.3, rpc.3, setnetgrent.3, shm_open.3, sigpause.3, stdin.3, stpcpy.3, strftime.3, strptime.3, syslog.3, towctrans.3, towlower.3, towupper.3, ttyslot.3, ungetwc.3, unlocked_stdio.3, wcpcpy.3, wcpncpy.3, wcrtomb.3, wcscasecmp.3, wcscat.3, wcschr.3, wcscmp.3, wcscpy.3, wcscspn.3, wcsdup.3, wcslen.3, wcsncasecmp.3, wcsncat.3, wcsncmp.3, wcsncpy.3, wcsnlen.3, wcsnrtombs.3, wcspbrk.3, wcsrchr.3, wcsrtombs.3, wcsspn.3, wcsstr.3, wcstok.3, wcstombs.3, wcswidth.3, wctob.3, wctomb.3, wctrans.3, wctype.3, wcwidth.3, wmemchr.3, wmemcmp.3, wmemcpy.3, wmemmove.3, wmemset.3, wprintf.3, console_ioctl.4, pts.4, elf.5, filesystems.5, hosts.5, proc.5, ttytype.5, boot.7, capabilities.7, credentials.7, epoll.7, glob.7, koi8-r.7, path_resolution.7, pty.7, signal.7, suffixes.7, time.7, unicode.7, unix.7, uri.7, utf-8.7: global fix: s/Unix/UNIX/
The man pages were rather inconsistent in the use of "Unix"
versus "UNIX". Let's go with the trademark usage.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2010-10-12 04:45:38 +00:00
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Linux is a flavor of UNIX, and as a first approximation
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all user commands under UNIX work precisely the same under
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Linux (and FreeBSD and lots of other UNIX-like systems).
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2004-11-03 13:51:07 +00:00
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.LP
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Under Linux there are GUIs (graphical user interfaces), where you
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can point and click and drag, and hopefully get work done without
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2007-06-08 11:25:04 +00:00
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first reading lots of documentation.
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intro.1, time.1, accept.2, bind.2, connect.2, execve.2, flock.2, getdents.2, getpriority.2, getuid.2, intro.2, ioctl.2, mincore.2, mknod.2, personality.2, ptrace.2, read.2, recv.2, select_tut.2, send.2, sendfile.2, shmctl.2, sigaction.2, signal.2, stat.2, times.2, truncate.2, umask.2, wait.2, MB_CUR_MAX.3, MB_LEN_MAX.3, argz_add.3, btowc.3, clearenv.3, clock.3, cmsg.3, end.3, endian.3, errno.3, exit.3, fgetwc.3, fgetws.3, fopen.3, fputwc.3, fputws.3, fseek.3, fwide.3, getfsent.3, getgrnam.3, gethostid.3, getipnodebyname.3, getmntent.3, getpwnam.3, getwchar.3, grantpt.3, iconv.3, iconv_close.3, iconv_open.3, insque.3, intro.3, iswalnum.3, iswalpha.3, iswblank.3, iswcntrl.3, iswctype.3, iswdigit.3, iswgraph.3, iswlower.3, iswprint.3, iswpunct.3, iswspace.3, iswupper.3, iswxdigit.3, malloc.3, mblen.3, mbrlen.3, mbrtowc.3, mbsinit.3, mbsnrtowcs.3, mbsrtowcs.3, mbstowcs.3, mbtowc.3, mkstemp.3, mktemp.3, nl_langinfo.3, openpty.3, posix_openpt.3, printf.3, ptsname.3, putwchar.3, qecvt.3, rcmd.3, readdir.3, rexec.3, rpc.3, setnetgrent.3, shm_open.3, sigpause.3, stdin.3, stpcpy.3, strftime.3, strptime.3, syslog.3, towctrans.3, towlower.3, towupper.3, ttyslot.3, ungetwc.3, unlocked_stdio.3, wcpcpy.3, wcpncpy.3, wcrtomb.3, wcscasecmp.3, wcscat.3, wcschr.3, wcscmp.3, wcscpy.3, wcscspn.3, wcsdup.3, wcslen.3, wcsncasecmp.3, wcsncat.3, wcsncmp.3, wcsncpy.3, wcsnlen.3, wcsnrtombs.3, wcspbrk.3, wcsrchr.3, wcsrtombs.3, wcsspn.3, wcsstr.3, wcstok.3, wcstombs.3, wcswidth.3, wctob.3, wctomb.3, wctrans.3, wctype.3, wcwidth.3, wmemchr.3, wmemcmp.3, wmemcpy.3, wmemmove.3, wmemset.3, wprintf.3, console_ioctl.4, pts.4, elf.5, filesystems.5, hosts.5, proc.5, ttytype.5, boot.7, capabilities.7, credentials.7, epoll.7, glob.7, koi8-r.7, path_resolution.7, pty.7, signal.7, suffixes.7, time.7, unicode.7, unix.7, uri.7, utf-8.7: global fix: s/Unix/UNIX/
The man pages were rather inconsistent in the use of "Unix"
versus "UNIX". Let's go with the trademark usage.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2010-10-12 04:45:38 +00:00
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The traditional UNIX environment
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2004-11-03 13:51:07 +00:00
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is a CLI (command line interface), where you type commands to
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2007-06-08 11:25:04 +00:00
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tell the computer what to do.
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That is faster and more powerful,
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2004-11-03 13:51:07 +00:00
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but requires finding out what the commands are.
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Below a bare minimum, to get started.
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.SS "Login"
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In order to start working, you probably first have to login,
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2007-06-08 11:25:04 +00:00
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that is, give your username and password.
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See also
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2004-11-03 13:51:07 +00:00
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.BR login (1).
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The program
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.I login
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now starts a
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.I shell
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(command interpreter) for you.
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In case of a graphical login, you get a screen with menus or icons
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2007-06-08 11:25:04 +00:00
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and a mouse click will start a shell in a window.
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See also
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2004-11-03 13:51:07 +00:00
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.BR xterm (1).
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.SS "The shell"
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One types commands to the
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.IR shell ,
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2007-06-08 11:25:04 +00:00
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the command interpreter.
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It is not built-in, but is just a program
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and you can change your shell.
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Everybody has her own favorite one.
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2004-11-03 13:51:07 +00:00
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The standard one is called
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.IR sh .
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See also
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.BR ash (1),
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.BR bash (1),
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.BR csh (1),
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.BR zsh (1),
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.BR chsh (1).
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.LP
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A session might go like
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.RS
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.nf
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.BI "knuth login: " aeb
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.BI "Password: " ********
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.BI "% " date
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Tue Aug 6 23:50:44 CEST 2002
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.BI "% " cal
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August 2002
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2007-06-21 22:55:04 +00:00
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Su Mo Tu We Th Fr Sa
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2004-11-03 13:51:07 +00:00
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1 2 3
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4 5 6 7 8 9 10
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11 12 13 14 15 16 17
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18 19 20 21 22 23 24
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25 26 27 28 29 30 31
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.BI "% " ls
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bin tel
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2005-07-06 12:57:38 +00:00
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.BI "% " "ls \-l"
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2004-11-03 13:51:07 +00:00
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total 2
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2007-12-22 16:40:46 +00:00
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drwxrwxr\-x 2 aeb 1024 Aug 6 23:51 bin
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\-rw\-rw\-r\-\- 1 aeb 37 Aug 6 23:52 tel
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2004-11-03 13:51:07 +00:00
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.BI "% " "cat tel"
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2007-12-22 16:40:46 +00:00
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maja 0501\-1136285
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peter 0136\-7399214
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2004-11-03 13:51:07 +00:00
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.BI "% " "cp tel tel2"
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2005-07-06 12:57:38 +00:00
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.BI "% " "ls \-l"
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2004-11-03 13:51:07 +00:00
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total 3
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2007-12-22 16:40:46 +00:00
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drwxr\-xr\-x 2 aeb 1024 Aug 6 23:51 bin
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\-rw\-r\-\-r\-\- 1 aeb 37 Aug 6 23:52 tel
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\-rw\-r\-\-r\-\- 1 aeb 37 Aug 6 23:53 tel2
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2004-11-03 13:51:07 +00:00
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.BI "% " "mv tel tel1"
|
2005-07-06 12:57:38 +00:00
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.BI "% " "ls \-l"
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2004-11-03 13:51:07 +00:00
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total 3
|
2007-12-22 16:40:46 +00:00
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drwxr\-xr\-x 2 aeb 1024 Aug 6 23:51 bin
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\-rw\-r\-\-r\-\- 1 aeb 37 Aug 6 23:52 tel1
|
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\-rw\-r\-\-r\-\- 1 aeb 37 Aug 6 23:53 tel2
|
2004-11-03 13:51:07 +00:00
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.BI "% " "diff tel1 tel2"
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.BI "% " "rm tel1"
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.BI "% " "grep maja tel2"
|
2007-12-22 16:40:46 +00:00
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maja 0501\-1136285
|
2007-09-20 16:26:31 +00:00
|
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.B "% "
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2004-11-03 13:51:07 +00:00
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.fi
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.RE
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and here typing Control-D ended the session.
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The
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.B "% "
|
intro.1, fork.2, futex.2, open.2, rename.2, select_tut.2, semop.2, spu_create.2, stat.2, netlink.3, random.3, scanf.3, shm_open.3, strftime.3, console.4, console_codes.4, sk98lin.4, st.4, bootparam.7, cpuset.7, credentials.7, man-pages.7, path_resolution.7, uri.7: Global fix: remove spaces around em-dash
Normal English typographical convention is not to have
spaces around em dashes.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2011-10-03 06:47:35 +00:00
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here was the command prompt\(emit is the shell's way of indicating
|
2007-06-08 11:25:04 +00:00
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that it is ready for the next command.
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The prompt can be customized
|
2008-06-30 14:36:59 +00:00
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in lots of ways, and one might include stuff like username,
|
2012-05-06 19:33:56 +00:00
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machine name, current directory, time, and so on.
|
2004-11-03 13:51:07 +00:00
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An assignment PS1="What next, master? "
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would change the prompt as indicated.
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.LP
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We see that there are commands
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.I date
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(that gives date and time), and
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.I cal
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(that gives a calendar).
|
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.LP
|
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The command
|
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.I ls
|
intro.1, fork.2, futex.2, open.2, rename.2, select_tut.2, semop.2, spu_create.2, stat.2, netlink.3, random.3, scanf.3, shm_open.3, strftime.3, console.4, console_codes.4, sk98lin.4, st.4, bootparam.7, cpuset.7, credentials.7, man-pages.7, path_resolution.7, uri.7: Global fix: remove spaces around em-dash
Normal English typographical convention is not to have
spaces around em dashes.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2011-10-03 06:47:35 +00:00
|
|
|
lists the contents of the current directory\(emit tells you what
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2007-06-08 11:25:04 +00:00
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|
files you have.
|
2008-06-26 13:28:19 +00:00
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With a
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.I \-l
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option it gives a long listing,
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2004-11-03 13:51:07 +00:00
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that includes the owner and size and date of the file, and the
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permissions people have for reading and/or changing the file.
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For example, the file "tel" here is 37 bytes long, owned by aeb
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and the owner can read and write it, others can only read it.
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Owner and permissions can be changed by the commands
|
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.I chown
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and
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.IR chmod .
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.LP
|
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|
The command
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|
.I cat
|
|
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|
will show the contents of a file.
|
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|
(The name is from "concatenate and print": all files given as
|
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|
parameters are concatenated and sent to "standard output", here
|
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|
the terminal screen.)
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.LP
|
|
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|
The command
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|
.I cp
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(from "copy") will copy a file.
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|
On the other hand, the command
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.I mv
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(from "move") only renames it.
|
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.LP
|
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|
The command
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|
.I diff
|
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|
|
lists the differences between two files.
|
|
|
|
Here there was no output because there were no differences.
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.LP
|
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|
|
The command
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|
.I rm
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|
(from "remove") deletes the file, and be careful! it is gone.
|
2007-06-08 11:25:04 +00:00
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No wastepaper basket or anything.
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Deleted means lost.
|
2004-11-03 13:51:07 +00:00
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.LP
|
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|
The command
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|
|
.I grep
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|
|
(from "g/re/p") finds occurrences of a string in one or more files.
|
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|
Here it finds Maja's telephone number.
|
2006-02-12 22:19:08 +00:00
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|
.SS "Pathnames and the current directory"
|
2004-11-03 13:51:07 +00:00
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|
|
Files live in a large tree, the file hierarchy.
|
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|
|
Each has a
|
2006-02-12 22:19:08 +00:00
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|
.I "pathname"
|
2004-11-03 13:51:07 +00:00
|
|
|
describing the path from the root of the tree (which is called /)
|
2007-06-08 11:25:04 +00:00
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|
|
to the file.
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|
|
For example, such a full pathname might be /home/aeb/tel.
|
2006-02-12 22:19:08 +00:00
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|
Always using full pathnames would be inconvenient, and the name
|
2004-11-03 13:51:07 +00:00
|
|
|
of a file in the current directory may be abbreviated by only giving
|
2007-06-08 11:25:04 +00:00
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|
the last component.
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|
That is why "/home/aeb/tel" can be abbreviated
|
2004-11-03 13:51:07 +00:00
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|
|
to "tel" when the current directory is "/home/aeb".
|
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|
.LP
|
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|
|
The command
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|
.I pwd
|
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|
|
prints the current directory.
|
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|
.LP
|
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|
|
The command
|
|
|
|
.I cd
|
|
|
|
changes the current directory.
|
|
|
|
Try "cd /" and "pwd" and "cd" and "pwd".
|
|
|
|
.SS "Directories"
|
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|
The command
|
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|
.I mkdir
|
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|
|
makes a new directory.
|
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|
.LP
|
|
|
|
The command
|
|
|
|
.I rmdir
|
|
|
|
removes a directory if it is empty, and complains otherwise.
|
|
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|
.LP
|
|
|
|
The command
|
|
|
|
.I find
|
|
|
|
(with a rather baroque syntax) will find files with given name
|
2008-06-12 06:09:19 +00:00
|
|
|
or other properties.
|
|
|
|
For example, "find . \-name tel" would find
|
2004-11-03 13:51:07 +00:00
|
|
|
the file "tel" starting in the present directory (which is called ".").
|
2005-07-06 07:41:37 +00:00
|
|
|
And "find / \-name tel" would do the same, but starting at the root
|
2008-06-12 06:09:19 +00:00
|
|
|
of the tree.
|
|
|
|
Large searches on a multi-GB disk will be time-consuming,
|
2004-11-03 13:51:07 +00:00
|
|
|
and it may be better to use
|
|
|
|
.BR locate (1).
|
intro.1, time.1, _syscall.2, accept.2, brk.2, capget.2, faccessat.2, futimesat.2, gethostname.2, intro.2, ioprio_set.2, kill.2, madvise.2, mlock.2, mount.2, msgget.2, perf_event_open.2, poll.2, readv.2, sched_rr_get_interval.2, sched_setscheduler.2, select.2, select_tut.2, shmget.2, stat.2, timer_create.2, ustat.2, vfork.2, wait.2, alloca.3, atexit.3, catopen.3, crypt.3, dbopen.3, fenv.3, fopen.3, getaddrinfo_a.3, gethostbyname.3, getutent.3, intro.3, login.3, mallopt.3, queue.3, regex.3, sigpause.3, sigsetops.3, stdio.3, strftime.3, strptime.3, sysconf.3, ttyslot.3, undocumented.3, cciss.4, console_codes.4, hpsa.4, initrd.4, intro.4, rtc.4, st.4, tty_ioctl.4, wavelan.4, acct.5, charmap.5, dir_colors.5, hosts.5, intro.5, termcap.5, utmp.5, intro.6, armscii-8.7, boot.7, bootparam.7, capabilities.7, cpuset.7, credentials.7, ddp.7, epoll.7, glob.7, intro.7, ip.7, ipv6.7, iso_8859-1.7, iso_8859-10.7, iso_8859-11.7, iso_8859-13.7, iso_8859-14.7, iso_8859-15.7, iso_8859-16.7, iso_8859-2.7, iso_8859-3.7, iso_8859-4.7, iso_8859-5.7, iso_8859-6.7, iso_8859-7.7, iso_8859-8.7, iso_8859-9.7, koi8-r.7, koi8-u.7, man-pages.7, man.7, math_error.7, netlink.7, numa.7, packet.7, path_resolution.7, pipe.7, pthreads.7, raw.7, rtnetlink.7, signal.7, socket.7, spufs.7, svipc.7, tcp.7, time.7, udp.7, udplite.7, unicode.7, unix.7, uri.7, utf-8.7, x25.7, intro.8: Global fix: use consistent capitalization in .SS headings
Capitalization in .SS sections across pages (and sometimes even
within a single page) is wildly inconsistent. Make it consistent.
Capitalize first word in heading, but otherwise use lower case,
except where English usage (e.g., proper nouns) or programming
language requirements (e.g., identifier names) dictate otherwise.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2013-02-24 14:08:38 +00:00
|
|
|
.SS "Disks and filesystems"
|
2004-11-03 13:51:07 +00:00
|
|
|
The command
|
|
|
|
.I mount
|
2008-03-19 07:26:08 +00:00
|
|
|
will attach the file system found on some disk (or floppy, or CDROM or so)
|
2008-06-12 06:09:19 +00:00
|
|
|
to the big file system hierarchy.
|
|
|
|
And
|
2004-11-03 13:51:07 +00:00
|
|
|
.I umount
|
|
|
|
detaches it again.
|
|
|
|
The command
|
|
|
|
.I df
|
|
|
|
will tell you how much of your disk is still free.
|
|
|
|
.SS "Processes"
|
intro.1, time.1, accept.2, bind.2, connect.2, execve.2, flock.2, getdents.2, getpriority.2, getuid.2, intro.2, ioctl.2, mincore.2, mknod.2, personality.2, ptrace.2, read.2, recv.2, select_tut.2, send.2, sendfile.2, shmctl.2, sigaction.2, signal.2, stat.2, times.2, truncate.2, umask.2, wait.2, MB_CUR_MAX.3, MB_LEN_MAX.3, argz_add.3, btowc.3, clearenv.3, clock.3, cmsg.3, end.3, endian.3, errno.3, exit.3, fgetwc.3, fgetws.3, fopen.3, fputwc.3, fputws.3, fseek.3, fwide.3, getfsent.3, getgrnam.3, gethostid.3, getipnodebyname.3, getmntent.3, getpwnam.3, getwchar.3, grantpt.3, iconv.3, iconv_close.3, iconv_open.3, insque.3, intro.3, iswalnum.3, iswalpha.3, iswblank.3, iswcntrl.3, iswctype.3, iswdigit.3, iswgraph.3, iswlower.3, iswprint.3, iswpunct.3, iswspace.3, iswupper.3, iswxdigit.3, malloc.3, mblen.3, mbrlen.3, mbrtowc.3, mbsinit.3, mbsnrtowcs.3, mbsrtowcs.3, mbstowcs.3, mbtowc.3, mkstemp.3, mktemp.3, nl_langinfo.3, openpty.3, posix_openpt.3, printf.3, ptsname.3, putwchar.3, qecvt.3, rcmd.3, readdir.3, rexec.3, rpc.3, setnetgrent.3, shm_open.3, sigpause.3, stdin.3, stpcpy.3, strftime.3, strptime.3, syslog.3, towctrans.3, towlower.3, towupper.3, ttyslot.3, ungetwc.3, unlocked_stdio.3, wcpcpy.3, wcpncpy.3, wcrtomb.3, wcscasecmp.3, wcscat.3, wcschr.3, wcscmp.3, wcscpy.3, wcscspn.3, wcsdup.3, wcslen.3, wcsncasecmp.3, wcsncat.3, wcsncmp.3, wcsncpy.3, wcsnlen.3, wcsnrtombs.3, wcspbrk.3, wcsrchr.3, wcsrtombs.3, wcsspn.3, wcsstr.3, wcstok.3, wcstombs.3, wcswidth.3, wctob.3, wctomb.3, wctrans.3, wctype.3, wcwidth.3, wmemchr.3, wmemcmp.3, wmemcpy.3, wmemmove.3, wmemset.3, wprintf.3, console_ioctl.4, pts.4, elf.5, filesystems.5, hosts.5, proc.5, ttytype.5, boot.7, capabilities.7, credentials.7, epoll.7, glob.7, koi8-r.7, path_resolution.7, pty.7, signal.7, suffixes.7, time.7, unicode.7, unix.7, uri.7, utf-8.7: global fix: s/Unix/UNIX/
The man pages were rather inconsistent in the use of "Unix"
versus "UNIX". Let's go with the trademark usage.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2010-10-12 04:45:38 +00:00
|
|
|
On a UNIX system many user and system processes run simultaneously.
|
2004-11-03 13:51:07 +00:00
|
|
|
The one you are talking to runs in the
|
|
|
|
.IR foreground ,
|
|
|
|
the others in the
|
|
|
|
.IR background .
|
|
|
|
The command
|
|
|
|
.I ps
|
|
|
|
will show you which processes are active and what numbers these
|
|
|
|
processes have.
|
|
|
|
The command
|
|
|
|
.I kill
|
2008-06-12 06:09:19 +00:00
|
|
|
allows you to get rid of them.
|
|
|
|
Without option this is a friendly
|
|
|
|
request: please go away.
|
|
|
|
And "kill \-9" followed by the number
|
2004-11-03 13:51:07 +00:00
|
|
|
of the process is an immediate kill.
|
|
|
|
Foreground processes can often be killed by typing Control-C.
|
|
|
|
.SS "Getting information"
|
|
|
|
There are thousands of commands, each with many options.
|
|
|
|
Traditionally commands are documented on
|
|
|
|
.IR "man pages" ,
|
|
|
|
(like this one), so that the command "man kill" will document
|
|
|
|
the use of the command "kill" (and "man man" document the command "man").
|
|
|
|
The program
|
|
|
|
.I man
|
|
|
|
sends the text through some
|
|
|
|
.IR pager ,
|
|
|
|
usually
|
|
|
|
.IR less .
|
|
|
|
Hit the space bar to get the next page, hit q to quit.
|
|
|
|
.LP
|
2005-06-24 14:17:21 +00:00
|
|
|
In documentation it is customary to refer to man pages
|
2004-11-03 13:51:07 +00:00
|
|
|
by giving the name and section number, as in
|
|
|
|
.BR man (1).
|
|
|
|
Man pages are terse, and allow you to find quickly some forgotten
|
2008-06-12 06:09:19 +00:00
|
|
|
detail.
|
|
|
|
For newcomers an introductory text with more examples
|
2004-11-03 13:51:07 +00:00
|
|
|
and explanations is useful.
|
|
|
|
.LP
|
2008-06-12 06:09:19 +00:00
|
|
|
A lot of GNU/FSF software is provided with info files.
|
|
|
|
Type "info info"
|
2004-11-03 13:51:07 +00:00
|
|
|
for an introduction on the use of the program "info".
|
|
|
|
.LP
|
2008-06-12 06:09:19 +00:00
|
|
|
Special topics are often treated in HOWTOs.
|
|
|
|
Look in
|
2004-11-03 13:51:07 +00:00
|
|
|
.I /usr/share/doc/howto/en
|
|
|
|
and use a browser if you find HTML files there.
|
|
|
|
.\"
|
|
|
|
.\" Actual examples? Separate section for each of cat, cp, ...?
|
|
|
|
.\" gzip, bzip2, tar, rpm
|
getent.1, intro.1, time.1, _exit.2, _syscall.2, accept.2, access.2, acct.2, adjtimex.2, alarm.2, alloc_hugepages.2, arch_prctl.2, bdflush.2, bind.2, brk.2, cacheflush.2, capget.2, chdir.2, chmod.2, chown.2, chroot.2, clock_getres.2, clock_nanosleep.2, clone.2, close.2, connect.2, create_module.2, delete_module.2, dup.2, epoll_create.2, epoll_ctl.2, epoll_wait.2, eventfd.2, execve.2, exit_group.2, faccessat.2, fchmodat.2, fchownat.2, fcntl.2, flock.2, fork.2, fstatat.2, fsync.2, futex.2, futimesat.2, get_kernel_syms.2, get_robust_list.2, get_thread_area.2, getcpu.2, getdents.2, getdomainname.2, getgid.2, getgroups.2, gethostname.2, getitimer.2, getpagesize.2, getpeername.2, getpid.2, getpriority.2, getresuid.2, getrlimit.2, getrusage.2, getsid.2, getsockname.2, getsockopt.2, gettid.2, gettimeofday.2, getuid.2, getunwind.2, getxattr.2, idle.2, init_module.2, inotify_add_watch.2, inotify_init.2, inotify_rm_watch.2, intro.2, io_cancel.2, io_destroy.2, io_getevents.2, io_setup.2, io_submit.2, ioctl.2, ioctl_list.2, ioperm.2, iopl.2, ioprio_set.2, ipc.2, kcmp.2, kill.2, killpg.2, link.2, linkat.2, listen.2, listxattr.2, llseek.2, lookup_dcookie.2, lseek.2, madvise.2, migrate_pages.2, mincore.2, mkdir.2, mkdirat.2, mknod.2, mknodat.2, mlock.2, mmap.2, mmap2.2, modify_ldt.2, mount.2, move_pages.2, mprotect.2, mq_getsetattr.2, mremap.2, msgctl.2, msgget.2, msgop.2, msync.2, nanosleep.2, nfsservctl.2, nice.2, open.2, openat.2, outb.2, pause.2, pciconfig_read.2, perf_event_open.2, perfmonctl.2, personality.2, pipe.2, pivot_root.2, poll.2, posix_fadvise.2, prctl.2, pread.2, process_vm_readv.2, ptrace.2, query_module.2, quotactl.2, read.2, readahead.2, readdir.2, readlink.2, readlinkat.2, readv.2, reboot.2, recv.2, remap_file_pages.2, removexattr.2, rename.2, renameat.2, rmdir.2, rt_sigqueueinfo.2, sched_get_priority_max.2, sched_rr_get_interval.2, sched_setaffinity.2, sched_setparam.2, sched_setscheduler.2, sched_yield.2, select.2, semctl.2, semget.2, semop.2, send.2, sendfile.2, set_thread_area.2, set_tid_address.2, seteuid.2, setfsgid.2, setfsuid.2, setgid.2, setpgid.2, setresuid.2, setreuid.2, setsid.2, setuid.2, setup.2, setxattr.2, shmctl.2, shmget.2, shmop.2, shutdown.2, sigaction.2, sigaltstack.2, signal.2, signalfd.2, sigpending.2, sigprocmask.2, sigreturn.2, sigsuspend.2, sigwaitinfo.2, socket.2, socketcall.2, socketpair.2, splice.2, stat.2, statfs.2, stime.2, swapon.2, symlink.2, symlinkat.2, sync.2, sync_file_range.2, sysctl.2, sysfs.2, sysinfo.2, syslog.2, tee.2, time.2, timerfd_create.2, times.2, tkill.2, truncate.2, umask.2, umount.2, uname.2, unimplemented.2, unlink.2, unlinkat.2, uselib.2, ustat.2, utime.2, utimensat.2, vfork.2, vhangup.2, vm86.2, vmsplice.2, wait.2, wait4.2, write.2, CPU_SET.3, INFINITY.3, MB_CUR_MAX.3, MB_LEN_MAX.3, __setfpucw.3, a64l.3, abort.3, abs.3, acos.3, acosh.3, addseverity.3, adjtime.3, aio_cancel.3, aio_error.3, aio_fsync.3, aio_read.3, aio_return.3, aio_suspend.3, aio_write.3, alloca.3, argz_add.3, asin.3, asinh.3, asprintf.3, assert.3, assert_perror.3, atan.3, atan2.3, atanh.3, atexit.3, atof.3, atoi.3, backtrace.3, basename.3, bcmp.3, bcopy.3, bindresvport.3, bsd_signal.3, bsearch.3, bstring.3, btowc.3, btree.3, byteorder.3, bzero.3, cabs.3, cacos.3, cacosh.3, canonicalize_file_name.3, carg.3, casin.3, casinh.3, catan.3, catanh.3, catgets.3, catopen.3, cbrt.3, ccos.3, ccosh.3, ceil.3, cerf.3, cexp.3, cexp2.3, cfree.3, cimag.3, clearenv.3, clock.3, clock_getcpuclockid.3, clog.3, clog10.3, clog2.3, closedir.3, cmsg.3, confstr.3, conj.3, copysign.3, cos.3, cosh.3, cpow.3, cproj.3, creal.3, crypt.3, csin.3, csinh.3, csqrt.3, ctan.3, ctanh.3, ctermid.3, ctime.3, daemon.3, dbopen.3, des_crypt.3, difftime.3, dirfd.3, div.3, dl_iterate_phdr.3, dlopen.3, dprintf.3, drand48.3, drand48_r.3, dysize.3, ecvt.3, ecvt_r.3, encrypt.3, end.3, endian.3, envz_add.3, erf.3, erfc.3, err.3, errno.3, error.3, ether_aton.3, euidaccess.3, exec.3, exit.3, exp.3, exp10.3, exp2.3, expm1.3, fabs.3, fclose.3, fcloseall.3, fdim.3, fenv.3, ferror.3, fexecve.3, fflush.3, ffs.3, fgetgrent.3, fgetpwent.3, fgetwc.3, fgetws.3, finite.3, flockfile.3, floor.3, fma.3, fmax.3, fmemopen.3, fmin.3, fmod.3, fmtmsg.3, fnmatch.3, fopen.3, fpathconf.3, fpclassify.3, fpurge.3, fputwc.3, fputws.3, fread.3, frexp.3, fseek.3, fseeko.3, ftime.3, ftok.3, fts.3, ftw.3, futimes.3, fwide.3, gamma.3, gcvt.3, getaddrinfo.3, getaddrinfo_a.3, getauxval.3, getcontext.3, getcwd.3, getdate.3, getdirentries.3, getdtablesize.3, getenv.3, getfsent.3, getgrent.3, getgrent_r.3, getgrnam.3, getgrouplist.3, gethostbyname.3, gethostid.3, getipnodebyname.3, getline.3, getloadavg.3, getlogin.3, getmntent.3, getnameinfo.3, getnetent.3, getnetent_r.3, getopt.3, getpass.3, getprotoent.3, getprotoent_r.3, getpt.3, getpw.3, getpwent.3, getpwent_r.3, getpwnam.3, getrpcent.3, getrpcent_r.3, getrpcport.3, gets.3, getservent.3, getservent_r.3, getspnam.3, getttyent.3, getumask.3, getusershell.3, getutent.3, getw.3, getwchar.3, glob.3, grantpt.3, gsignal.3, hash.3, hsearch.3, hypot.3, iconv.3, iconv_close.3, iconv_open.3, ilogb.3, index.3, inet.3, inet_ntop.3, inet_pton.3, infnan.3, initgroups.3, insque.3, intro.3, isalpha.3, isatty.3, isgreater.3, iswalnum.3, iswalpha.3, iswblank.3, iswcntrl.3, iswctype.3, iswdigit.3, iswgraph.3, iswlower.3, iswprint.3, iswpunct.3, iswspace.3, iswupper.3, iswxdigit.3, j0.3, key_setsecret.3, ldexp.3, lgamma.3, lio_listio.3, localeconv.3, lockf.3, log.3, log10.3, log1p.3, log2.3, logb.3, login.3, longjmp.3, lrint.3, lround.3, lsearch.3, lseek64.3, makecontext.3, makedev.3, malloc.3, malloc_hook.3, mblen.3, mbrlen.3, mbrtowc.3, mbsinit.3, mbsnrtowcs.3, mbsrtowcs.3, mbstowcs.3, mbtowc.3, memccpy.3, memchr.3, memcmp.3, memcpy.3, memfrob.3, memmem.3, memmove.3, mempcpy.3, memset.3, mkdtemp.3, mkfifo.3, mkfifoat.3, mkstemp.3, mktemp.3, modf.3, mpool.3, mq_close.3, mq_getattr.3, mq_notify.3, mq_open.3, mq_receive.3, mq_send.3, mq_unlink.3, mtrace.3, nan.3, netlink.3, nextafter.3, nl_langinfo.3, offsetof.3, on_exit.3, opendir.3, openpty.3, perror.3, popen.3, posix_fallocate.3, posix_memalign.3, posix_openpt.3, pow.3, pow10.3, printf.3, profil.3, program_invocation_name.3, psignal.3, pthread_kill_other_threads_np.3, ptsname.3, putenv.3, putgrent.3, putpwent.3, puts.3, putwchar.3, qecvt.3, qsort.3, queue.3, raise.3, rand.3, random.3, random_r.3, rcmd.3, re_comp.3, readdir.3, realpath.3, recno.3, regex.3, remainder.3, remove.3, remquo.3, resolver.3, rewinddir.3, rexec.3, rint.3, round.3, rpc.3, rpmatch.3, rtime.3, rtnetlink.3, scalb.3, scalbln.3, scandir.3, scandirat.3, scanf.3, seekdir.3, sem_close.3, sem_destroy.3, sem_getvalue.3, sem_init.3, sem_open.3, sem_post.3, sem_unlink.3, sem_wait.3, setaliasent.3, setbuf.3, setenv.3, setjmp.3, setlocale.3, setlogmask.3, setnetgrent.3, shm_open.3, siginterrupt.3, signbit.3, significand.3, sigpause.3, sigqueue.3, sigset.3, sigsetops.3, sigvec.3, sin.3, sincos.3, sinh.3, sleep.3, sockatmark.3, sqrt.3, statvfs.3, stdarg.3, stdin.3, stdio.3, stdio_ext.3, stpcpy.3, stpncpy.3, strcasecmp.3, strcat.3, strchr.3, strcmp.3, strcoll.3, strcpy.3, strdup.3, strerror.3, strfmon.3, strfry.3, strftime.3, string.3, strlen.3, strnlen.3, strpbrk.3, strptime.3, strsep.3, strsignal.3, strspn.3, strstr.3, strtod.3, strtoimax.3, strtok.3, strtol.3, strtoul.3, strverscmp.3, strxfrm.3, swab.3, sysconf.3, syslog.3, system.3, sysv_signal.3, tan.3, tanh.3, tcgetpgrp.3, tcgetsid.3, telldir.3, tempnam.3, termios.3, tgamma.3, timegm.3, timeradd.3, tmpfile.3, tmpnam.3, toascii.3, toupper.3, towctrans.3, towlower.3, towupper.3, trunc.3, tsearch.3, ttyname.3, ttyslot.3, tzset.3, ualarm.3, ulimit.3, ungetwc.3, unlocked_stdio.3, unlockpt.3, updwtmp.3, usleep.3, wcpcpy.3, wcpncpy.3, wcrtomb.3, wcscasecmp.3, wcscat.3, wcschr.3, wcscmp.3, wcscpy.3, wcscspn.3, wcsdup.3, wcslen.3, wcsncasecmp.3, wcsncat.3, wcsncmp.3, wcsncpy.3, wcsnlen.3, wcsnrtombs.3, wcspbrk.3, wcsrchr.3, wcsrtombs.3, wcsspn.3, wcsstr.3, wcstoimax.3, wcstok.3, wcstombs.3, wcswidth.3, wctob.3, wctomb.3, wctrans.3, wctype.3, wcwidth.3, wmemchr.3, wmemcmp.3, wmemcpy.3, wmemmove.3, wmemset.3, wordexp.3, wprintf.3, xcrypt.3, xdr.3, y0.3, cciss.4, console.4, console_codes.4, console_ioctl.4, dsp56k.4, fd.4, full.4, hd.4, hpsa.4, initrd.4, intro.4, lp.4, mem.4, mouse.4, null.4, pts.4, ram.4, random.4, rtc.4, sk98lin.4, st.4, tty.4, ttyS.4, tty_ioctl.4, vcs.4, wavelan.4, acct.5, charmap.5, dir_colors.5, filesystems.5, ftpusers.5, group.5, host.conf.5, hosts.5, hosts.equiv.5, intro.5, issue.5, locale.5, motd.5, networks.5, nologin.5, nscd.conf.5, passwd.5, proc.5, protocols.5, resolv.conf.5, rpc.5, securetty.5, services.5, shells.5, termcap.5, ttytype.5, utmp.5, armscii-8.7, arp.7, ascii.7, bootparam.7, capabilities.7, charsets.7, complex.7, cp1251.7, credentials.7, ddp.7, environ.7, epoll.7, fifo.7, futex.7, glob.7, hier.7, icmp.7, inotify.7, intro.7, ip.7, ipv6.7, iso_8859-1.7, iso_8859-10.7, iso_8859-11.7, iso_8859-13.7, iso_8859-14.7, iso_8859-15.7, iso_8859-16.7, iso_8859-2.7, iso_8859-3.7, iso_8859-4.7, iso_8859-5.7, iso_8859-6.7, iso_8859-7.7, iso_8859-8.7, iso_8859-9.7, koi8-r.7, koi8-u.7, locale.7, mailaddr.7, man.7, mq_overview.7, netdevice.7, netlink.7, numa.7, packet.7, path_resolution.7, pipe.7, posixoptions.7, pthreads.7, pty.7, raw.7, regex.7, rtld-audit.7, rtnetlink.7, sem_overview.7, shm_overview.7, sigevent.7, signal.7, socket.7, standards.7, suffixes.7, svipc.7, tcp.7, termio.7, time.7, udp.7, udplite.7, unicode.7, unix.7, uri.7, utf-8.7, x25.7, nscd.8, sync.8, tzselect.8, zdump.8, zic.8: Global fix: remove unneeded double quotes in .SH headings
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2013-02-24 18:01:36 +00:00
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.SH SEE ALSO
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2006-08-03 06:13:56 +00:00
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.BR standards (7)
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