HardenedBSD/usr.bin/timeout/timeout.1
Baptiste Daroussin 54c2e46443 Improve compatibility with GNU timeout
According to the coreutils regression testsuite for timeout(1)
It is expect to exit with a status being:
125 in case an invalid duration or signal is passed in arguments
126 in case an invalid command is passed in arguments
127 in case the command passed in arguments does not exists.

While here document this behaviour in the man page
2014-10-28 10:33:31 +00:00

130 lines
3.2 KiB
Groff

.\" Copyright (c) 2014 Baptiste Daroussin <bapt@FreeBSD.org>
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.\" $FreeBSD$
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.Dd Oct 28, 2014
.Dt TIMEOUT 1
.Os
.Sh NAME
.Nm timeout
.Nd run a command with a time limit
.Sh SYNOPSIS
.Nm
.Op Fl -signal Ar sig | Fl s Ar sig
.Op Fl -preserve-status
.Op Fl -kill-after Ar time | Fl k Ar time
.Op Fl -foreground
.Ao Ar duration Ac
.Ao Ar command Ac
.Ao Ar args ... Ac
.Sh DESCRIPTION
.Nm
starts the
.Ar command
with its
.Ar args.
If
.Ar command
is still running after
.Ar duration ,
it is killed.
By default,
.Ar SIGTERM.
is sent.
.Bl -tag -width "-k time, --kill-after time"
.It Fl -preserve-status
Always exits with the same status as
.Ar command
even if it times out.
.It Fl -foreground
Do not propagate timeout to the
.Ar command
children.
.It Fl s Ar sig , Fl -signal Ar sig
Specify the signal to send on timeout.
By default,
.Ar SIGTERM .
is sent.
.It Fl k Ar time , Fl -kill-after Ar time
Send a second kill signal if
.Ar command
is still running after
.Ar time
after the first signal was sent.
.El
.Sh DURATION FORMAT
.Ar duration
and
.Ar time
can be integer or decimal numbers.
Values without unit symbols are interpreted as seconds.
.Pp
Supported unit symbols are:
.Bl -tag -width indent -compact
.It s
seconds
.It m
minutes
.It h
hours
.It d
days
.El
.Sh EXIT STATUS
If the timeout was not reached, the exit status of
.Ar command
is returned.
.Pp
If the timeout was reached and
.Fl -preserve-status
is set, the exit status of
.Ar command
is returned.
If
.Fl -preserve-status
is not set, an exit status of 124 is returned.
.Pp
If
.Ar command
exits after receiving a signal, the exit status returned is the signal number
plus 128.
.Pp
If
.Ar command
is an invalid command, the exit status returned is 126.
.Pp
If
.Ar command
is a non existing command, the exit status returned is 127.
.Pp
If an invalid parameter is passed to
.Fl s
or
.Fl k ,
the exit status return is 125.
.Sh SEE ALSO
.Xr kill 1 ,
.Xr signal 3