I believe new users should be discouraged from using atoi() and
that its disadvantages should be explained.
I added the information that 0 is returned on error - although C
standard and POSIX say that "If the value of the result cannot be
represented, the behavior is undefined." there are some
interpretations that 0 has to be returned
https://stackoverflow.com/questions/38393162/what-can-i-assume-about-the-behaviour-of-atoi-on-error
and this is also what happens in practice with glibc, musl and
uClibc.
Signed-off-by: Arkadiusz Drabczyk <arkadiusz@drabczyk.org>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
pgrep for example searches for a process name in /proc/pid/status
and therefore cannot find processes whose names are longer than 15
characters unless -f is specified.
Signed-off-by: Arkadiusz Drabczyk <arkadiusz@drabczyk.org>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
Reorder full wordings to match the order of abbreviations.
Signed-off-by: Jakub Wilk <jwilk@jwilk.net>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
Starting with Linux 5.8, setns() can take a PID file descriptor as
an argument, and move the caller into or more of the namespaces of
the thread referred to by that descriptor.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
The page currently incorrectly says that 'fd' must refer to
a descendant PID namespace. However, 'fd' can also refer to
the caller's current PID namespace. Verified by experiment,
and also comments in kernel/pid_namespace.c (Linux 5.8-rc1).
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
Output is from: test-groff -b -e -mandoc -T utf8 -rF0 -t -w w -z
[ "test-groff" is a developmental version of "groff" ]
There is no change in the output of "nroff" and "groff".
####
troff: <fts.3>:50: warning: trailing space
####
troff: <getgrnam.3>:175: warning: trailing space
####
troff: <getpwnam.3>:181: warning: trailing space
####
troff: <rcmd.3>:52: warning: trailing space
troff: <rcmd.3>:57: warning: trailing space
troff: <rcmd.3>:60: warning: trailing space
troff: <rcmd.3>:63: warning: trailing space
troff: <rcmd.3>:69: warning: trailing space
troff: <rcmd.3>:73: warning: trailing space
####
troff: <rexec.3>:48: warning: trailing space
troff: <rexec.3>:51: warning: trailing space
####
troff: <sem_open.3>:36: warning: trailing space
Signed-off-by: Bjarni Ingi Gislason <bjarniig@rhi.hi.is>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
Remove superfluous space at the end of a processed input line.
There is no change in the output from "nroff" and "groff".
Signed-off-by: Bjarni Ingi Gislason <bjarniig@rhi.hi.is>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
The current version shows the square brackets, '[' and ']', in
boldface.
Use the '\c' escape sequence (function) to join the output of two
macros.
Signed-off-by: Bjarni Ingi Gislason <bjarniig@rhi.hi.is>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
Arkadiusz Drabczyk