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Quick links About
kill
Syntax
Examples
Related commands
Linux / Unix main page
About kill
Cancels a job.
Syntax
kill [-s] [-l] %pid
| -s |
Specify the signal to send, using one of the
symbolic names defined in the <signal.h> description. Values of signal will be recognized in a
case independent fashion, without the SIG prefix. In addition, the symbolic name 0 will be recognized,
representing the signal value zero. The corresponding signal will be sent instead of
SIGTERM. |
| -l |
Write all values of signal sup ported by the implementation, if no operand is given. If an exit_status operand is given and it is a value of the ? shell special parameter and wait corresponding to a process that was
ter minated by a signal, the signal corresponding to the signal that terminated the process will be written. If an exit_status operand is given and it is the unsigned decimal integer value of a signal number, the signal corresponding to that signal will be written. Otherwise, the results are unspecified. |
| pid |
One of the following:
1. A decimal integer specifying a process or process group to be signaled. The process or processes selected by positive, negative and
zero values of the pid operand will be as
described for the kill function. If process number 0 is specified, all processes in the process group are signaled. If the first pid
operand is negative, it should be preceded by -- to keep it from being interpreted as an option.
2. A job control job ID that identifies a
background process group to be signaled. The job control job ID notation is applicable
only for invocations of kill in the current shell execution environment.
Note the job control job ID type of pid is
available only on systems supporting the job control option. |
Examples
kill -s kill 100 -165
Kills job 1 of uid 165
When running the kill command you may receive the
error "Operation not permitted", this is often encountered when
you're killing the wrong group id (often 1,2,3 or low number jobs)
that you don't have permission to kill. If you wish to see the group
id of the background task run jobs -l Related
commands
bg
csh
fg
jobs
ksh
ps |
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