## NAME

skill, snice - send a signal or report process status

## SYNOPSIS

skill

expression
snice

expression

## DESCRIPTION

These tools are obsolete and unportable. The command syntax is poorly defined. Consider using the killall, pkill, and pgrep commands instead.

The default signal for skill is TERM. Use -l or -L to list available signals. Particularly useful signals include HUP, INT, KILL, STOP, CONT, and 0. Alternate signals may be specified in three ways: -9 -SIGKILL -KILL.

The default priority for snice is +4. Priority numbers range from +20 (slowest) to -20 (fastest). Negative priority numbers are restricted to administrative users.

## OPTIONS

-f, \ --fastFast mode. This option has not been implemented.

-i, \ --interactiveInteractive use. You will be asked to approve each action.

-l, \ --listList all signal names.

-L, \ --tableList all signal names in a nice table.

-n, \ --no-actionNo action; perform a simulation of events that would occur but do not actually change the system.

-v, \ --verboseVerbose; explain what is being done.

-w, \ --warningsEnable warnings. This option has not been implemented.

-h, --help Display help text and exit.

-V, --version Display version information.

## PROCESS SELECTION OPTIONS

Selection criteria can be: terminal, user, pid, command. The options below may be used to ensure correct interpretation.

-t, --tty tty The next expression is a terminal (tty or pty).

-u, --user user The next expression is a username.

-p, --pid pid The next expression is a process ID number.

-c, --command command The next expression is a command name.

--ns pid Match the processes that belong to the same namespace as pid.

--nslist ns,... list which namespaces will be considered for the --ns option. Available namespaces: ipc, mnt, net, pid, user, uts.

## SIGNALS

The behavior of signals is explained in , signal (7)manual page.

## EXAMPLES

snice -c seti -c crack +7 Slow down seti and crack commands.

skill -KILL -t /dev/pts/* Kill users on PTY devices.

skill -STOP -u viro -u lm -u davem Stop three users.

## SEE ALSO

kill (1), kill (2), killall (1), nice (1), pkill (1), renice (1), signal (7)

## STANDARDS

No standards apply.

## AUTHOR

Albert Cahalan

wrote skill and snice in 1999 as a replacement for a non-free version.

## REPORTING BUGS

Please send bug reports to