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termios.3: List terminal special characters in alphabetical order
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
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Michael Kerrisk
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man3/termios.3
180
man3/termios.3
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@ -469,42 +469,25 @@ and for the \fBIUCLC\fP flag to be effective.
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The \fIc_cc\fP array defines the terminal special characters.
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The symbolic indices (initial values) and meaning are:
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.TP
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.B VINTR
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(003, ETX, Ctrl-C, or also 0177, DEL, rubout)
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Interrupt character.
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Send a
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.B SIGINT
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signal.
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.B VDISCARD
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(not in POSIX; not supported under Linux; 017, SI, Ctrl-O)
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Toggle: start/stop discarding pending output.
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Recognized when
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.B IEXTEN
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is set, and then not passed as input.
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.TP
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.B VDSUSP
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(not in POSIX; not supported under Linux; 031, EM, Ctrl-Y)
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Delayed suspend character:
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send
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.B SIGTSTP
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signal when the character is read by the user program.
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Recognized when
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.B IEXTEN
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and
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.B ISIG
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is set, and then not passed as input.
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.TP
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.B VQUIT
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(034, FS, Ctrl-\e)
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Quit character.
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Send
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.B SIGQUIT
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signal.
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Recognized when
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.B ISIG
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is set, and then not passed as input.
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.TP
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.B VERASE
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(0177, DEL, rubout, or 010, BS, Ctrl-H, or also #)
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Erase character.
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This erases the previous not-yet-erased character,
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but does not erase past EOF or beginning-of-line.
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Recognized when
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.B ICANON
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is set, and then not passed as input.
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.TP
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.B VKILL
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(025, NAK, Ctrl-U, or Ctrl-X, or also @)
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Kill character.
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This erases the input since the last EOF or beginning-of-line.
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Recognized when
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.B ICANON
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is set, and then not passed as input.
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are set, and the system supports
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job control, and then not passed as input.
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.TP
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.B VEOF
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(004, EOT, Ctrl-D)
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@ -518,9 +501,6 @@ Recognized when
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.B ICANON
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is set, and then not passed as input.
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.TP
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.B VMIN
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Minimum number of characters for noncanonical read.
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.TP
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.B VEOL
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(0, NUL)
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Additional end-of-line character.
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@ -528,9 +508,6 @@ Recognized when
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.B ICANON
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is set.
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.TP
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.B VTIME
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Timeout in deciseconds for noncanonical read.
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.TP
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.B VEOL2
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(not in POSIX; 0, NUL)
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Yet another end-of-line character.
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@ -538,10 +515,63 @@ Recognized when
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.B ICANON
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is set.
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.TP
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.B VSWTCH
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(not in POSIX; not supported under Linux; 0, NUL)
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Switch character.
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(Used by \fBshl\fP only.)
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.B VERASE
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(0177, DEL, rubout, or 010, BS, Ctrl-H, or also #)
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Erase character.
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This erases the previous not-yet-erased character,
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but does not erase past EOF or beginning-of-line.
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Recognized when
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.B ICANON
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is set, and then not passed as input.
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.TP
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.B VINTR
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(003, ETX, Ctrl-C, or also 0177, DEL, rubout)
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Interrupt character.
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Send a
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.B SIGINT
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signal.
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Recognized when
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.B ISIG
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is set, and then not passed as input.
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.TP
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.B VKILL
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(025, NAK, Ctrl-U, or Ctrl-X, or also @)
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Kill character.
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This erases the input since the last EOF or beginning-of-line.
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Recognized when
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.B ICANON
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is set, and then not passed as input.
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.TP
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.B VLNEXT
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(not in POSIX; 026, SYN, Ctrl-V)
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Literal next.
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Quotes the next input character, depriving it of
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a possible special meaning.
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Recognized when
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.B IEXTEN
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is set, and then not passed as input.
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.TP
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.B VMIN
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Minimum number of characters for noncanonical read.
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.TP
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.B VQUIT
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(034, FS, Ctrl-\e)
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Quit character.
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Send
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.B SIGQUIT
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signal.
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Recognized when
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.B ISIG
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is set, and then not passed as input.
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.TP
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.B VREPRINT
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(not in POSIX; 022, DC2, Ctrl-R)
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Reprint unread characters.
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Recognized when
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.B ICANON
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and
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.B IEXTEN
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are set, and then not passed as input.
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.TP
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.B VSTART
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(021, DC1, Ctrl-Q)
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@ -551,6 +581,16 @@ Recognized when
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.B IXON
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is set, and then not passed as input.
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.TP
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.B VSTATUS
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(not in POSIX; not supported under Linux;
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status request: 024, DC4, Ctrl-T).
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Status character (STATUS).
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Display status information at terminal,
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including state of foreground process and amount of CPU time it has consumed.
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Also sends a
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.BR SIGINFO
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signal (not supported on Linux) to the foreground process group.
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.TP
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.B VSTOP
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(023, DC3, Ctrl-S)
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Stop character.
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@ -569,27 +609,13 @@ Recognized when
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.B ISIG
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is set, and then not passed as input.
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.TP
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.B VDSUSP
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(not in POSIX; not supported under Linux; 031, EM, Ctrl-Y)
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Delayed suspend character:
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send
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.B SIGTSTP
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signal when the character is read by the user program.
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Recognized when
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.B IEXTEN
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and
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.B ISIG
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are set, and the system supports
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job control, and then not passed as input.
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.B VSWTCH
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(not in POSIX; not supported under Linux; 0, NUL)
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Switch character.
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(Used by \fBshl\fP only.)
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.TP
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.B VLNEXT
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(not in POSIX; 026, SYN, Ctrl-V)
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Literal next.
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Quotes the next input character, depriving it of
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a possible special meaning.
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Recognized when
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.B IEXTEN
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is set, and then not passed as input.
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.B VTIME
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Timeout in deciseconds for noncanonical read.
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.TP
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.B VWERASE
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(not in POSIX; 027, ETB, Ctrl-W)
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@ -599,32 +625,6 @@ Recognized when
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and
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.B IEXTEN
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are set, and then not passed as input.
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.TP
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.B VREPRINT
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(not in POSIX; 022, DC2, Ctrl-R)
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Reprint unread characters.
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Recognized when
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.B ICANON
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and
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.B IEXTEN
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are set, and then not passed as input.
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.TP
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.B VDISCARD
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(not in POSIX; not supported under Linux; 017, SI, Ctrl-O)
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Toggle: start/stop discarding pending output.
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Recognized when
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.B IEXTEN
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is set, and then not passed as input.
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.TP
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.B VSTATUS
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(not in POSIX; not supported under Linux;
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status request: 024, DC4, Ctrl-T).
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Status character (STATUS).
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Display status information at terminal,
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including state of foreground process and amount of CPU time it has consumed.
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Also sends a
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.BR SIGINFO
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signal (not supported on Linux) to the foreground process group.
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.LP
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An individual terminal special character can be disabled by setting
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the value of the corresponding
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