timeout(1) - phpMan

TIMEOUT(1) User Commands TIMEOUT(1)

NAME
timeout - run a command with a time limit

SYNOPSIS
timeout [OPTION] DURATION COMMAND [ARG]...
timeout [OPTION]

DESCRIPTION
Start COMMAND, and kill it if still running after DURATION.

Mandatory arguments to long options are mandatory for short options too.

--preserve-status

exit with the same status as COMMAND, even when the

command times out

--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

-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 de-
fault), 'm' for minutes, 'h' for hours or 'd' for days. A duration of 0 disables the as-
sociated timeout.

If the command times out, and --preserve-status is not set, then exit with status 124.
Otherwise, exit with the status of COMMAND. If no signal is specified, send the TERM sig-
nal upon timeout. The TERM signal kills any process that does not block or catch that
signal. It may be necessary to use the KILL (9) signal, since this signal cannot be
caught, in which case the exit status is 128+9 rather than 124.

BUGS
Some platforms don't currently support timeouts beyond the year 2038.

AUTHOR
Written by Padraig Brady.

REPORTING BUGS
GNU coreutils online help: <https://www.gnu.org/software/coreutils/>
Report any translation bugs to <https://translationproject.org/team/>

COPYRIGHT
Copyright (C) 2020 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.