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KILL (1) | General commands | Unix Manual Pages | :man

NAME

kill - terminate or signal a process

CONTENTS

Synopsis
Description
Exit Status
Examples
See Also
Standards
History
Bugs

SYNOPSIS

kill [-s signal_name] pid ... kill -l [exit_status] kill signal_name pid ... kill signal_number pid ...

DESCRIPTION

The kill utility sends a signal to the processes specified by the pid operand(s).

Only the super-user may send signals to other users’ processes.

The options are as follows:

-s signal_name
A symbolic signal name specifying the signal to be sent instead of the default TERM.
-l [exit_status]
If no operand is given, list the signal names; otherwise, write the signal name corresponding to exit_status.
signal_name
A symbolic signal name specifying the signal to be sent instead of the default TERM.
signal_number
A non-negative decimal integer, specifying the signal to be sent instead of the default TERM.

The following pids have special meanings:

-1 If superuser, broadcast the signal to all processes; otherwise broadcast to all processes belonging to the user.

Some of the more commonly used signals:

1 HUP (hang up)
2 INT (interrupt)
3 QUIT (quit)
6 ABRT (abort)
9 KILL (non-catchable, non-ignorable kill)
14 ALRM (alarm clock)
15 TERM (software termination signal)

Some shells may provide a builtin kill command which is similar or identical to this utility. Consult the builtin(1) manual page.

EXIT STATUS


.Ex -std

EXAMPLES

Terminate the processes with pids 142 and 157:

"kill 142 157"

Send the hangup signal (SIGHUP) to the process with pid 507:

"kill -s HUP 507"

Terminate the process group with pgid 117:

"kill -- -117"

SEE ALSO

builtin(1), csh(1), killall(1), ps(1), kill(2), sigaction(2)

STANDARDS

HISTORY

BUGS

csh(1)


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