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NAME | SYNOPSIS | DESCRIPTION | BUGS | AUTHOR | REPORTING BUGS | COPYRIGHT | SEE ALSO | COLOPHON |
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TIMEOUT(1) User Commands TIMEOUT(1)
timeout - run a command with a time limit
timeout [OPTION] DURATION COMMAND [ARG]...
timeout [OPTION]
Start COMMAND, and kill it if still running after DURATION.
Mandatory arguments to long options are mandatory for short
options too.
-f, --foreground
when not running timeout directly from a shell prompt,
allow COMMAND to read from the TTY and get TTY signals; in
this mode, children of COMMAND will not be timed out
-k, --kill-after=DURATION
also send a KILL signal if COMMAND is still running this
long after the initial signal was sent
-p, --preserve-status
exit with the same status as COMMAND, even when the command
times out
-s, --signal=SIGNAL
specify the signal to be sent on timeout; SIGNAL may be a
name like 'HUP' or a number; see 'kill -l' for a list of
signals
-v, --verbose
diagnose to stderr any signal sent upon timeout
--help display this help and exit
--version
output version information and exit
DURATION is a floating point number with an optional suffix: 's'
for seconds (the default), 'm' for minutes, 'h' for hours or 'd'
for days. A duration of 0 disables the associated timeout.
Upon timeout, send the TERM signal to COMMAND, if no other SIGNAL
specified. The TERM signal kills any process that does not block
or catch that signal. It may be necessary to use the KILL signal,
since this signal can't be caught.
Exit status:
124 if COMMAND times out, and --preserve-status is not
specified
125 if the timeout command itself fails
126 if COMMAND is found but cannot be invoked
127 if COMMAND cannot be found
137 if COMMAND (or timeout itself) is sent the KILL (9) signal
(128+9)
- the exit status of COMMAND otherwise
Some platforms don't currently support timeouts beyond the year
2038.
Written by Padraig Brady.
GNU coreutils online help:
<https://www.gnu.org/software/coreutils/>
Report any translation bugs to
<https://translationproject.org/team/>
Copyright © 2025 Free Software Foundation, Inc. License GPLv3+:
GNU GPL version 3 or later <https://gnu.org/licenses/gpl.html>.
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
kill(1)
Full documentation
<https://www.gnu.org/software/coreutils/timeout>
or available locally via: info '(coreutils) timeout invocation'
This page is part of the coreutils (basic file, shell and text
manipulation utilities) project. Information about the project
can be found at ⟨http://www.gnu.org/software/coreutils/⟩. If you
have a bug report for this manual page, see
⟨http://www.gnu.org/software/coreutils/⟩. This page was obtained
from the tarball coreutils-9.7.tar.xz fetched from
⟨http://ftp.gnu.org/gnu/coreutils/⟩ on 2025-08-11. If you
discover any rendering problems in this HTML version of the page,
or you believe there is a better or more up-to-date source for the
page, or you have corrections or improvements to the information
in this COLOPHON (which is not part of the original manual page),
send a mail to man-pages@man7.org
GNU coreutils 9.7 April 2025 TIMEOUT(1)
Pages that refer to this page: time(7)
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HTML rendering created 2025-09-06 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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