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TIMEOUT

Section: User Commands (1)
Updated: September 2017
Index Return to Main Contents
 

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
--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.

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 signal 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: <http://www.gnu.org/software/coreutils/>
Report timeout translation bugs to <http://translationproject.org/team/>  

COPYRIGHT

Copyright © 2017 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://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.  

SEE ALSO

kill(1)


Full documentation at: <http://www.gnu.org/software/coreutils/timeout>
or available locally via: info aq(coreutils) timeout invocationaq


 

Index

NAME
SYNOPSIS
DESCRIPTION
BUGS
AUTHOR
REPORTING BUGS
COPYRIGHT
SEE ALSO


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