snice

SYNOPSIS

       skill [signal to send] [options] process selection criteria
       snice [new priority] [options] process selection criteria

DESCRIPTION

       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. (snice +4 ...)  Pri­
       ority  numbers  range from +20 (slowest) to -20 (fastest).
       Negative priority numbers are restricted to administrative
       users.

GENERAL OPTIONS

       -f   fast mode          This is not currently useful.
       -i   interactive use    You  will be asked to approve each
                               action.
       -v   verbose output     Display information about selected
                               processes.
       -w   warnings enabled   This is not currently useful.
       -n   no action          This only displays the process ID.
       -V   show version       Displays version of program.

PROCESS SELECTION OPTIONS

       Selection  criteria  can be: terminal, user, pid, command.
       The options below may be used to ensure correct  interpre­
       tation.   Do  not blame Albert for this interesting inter­
       face.
       -t   The next argument is a terminal (tty or pty).
       -u   The next argument is a username.
       -p   The next argument is a process ID number.
       -c   The next argument is a command name.

SIGNALS

       The signals listed below may be  available  for  use  with
       skill.   When  known,  numbers  and  default  behavior are
       shown.
       Name     Num   Action    Description
       ()                                                             ()

       0          0   n/a       exit code indicates if a signal may be sent
       ALRM      14   exit
       HUP        1   exit
       URG            ignore
       TSTP           stop      may interact with the shell
       TTIN           stop      may interact with the shell
       TTOU           stop      may interact with the shell
       STOP           stop      this signal may not be blocked
       CONT           restart   continue if stopped, otherwise ignore
       ABRT       6   core
       FPE        8   core
       ILL        4   core
       QUIT       3   core
       SEGV      11   core
       TRAP       5   core
       SYS            core      may not be implemented
       EMT            core      may not be implemented
       BUS            core      core dump may fail
       XCPU           core      core dump may fail
       XFSZ           core      core dump may fail

EXAMPLES

       Command                     Description
       snice seti crack +7         Slow down seti and crack
       skill -KILL -v /dev/pts/*   Kill users on new-style PTY devices
       skill -STOP viro lm davem   Stop 3 users
       snice -17 root bash         Give priority to root's shell

SEE ALSO

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

STANDARDS

       No standards apply.

AUTHOR

       Albert Cahalan <albert@users.sf.net> wrote skill and snice
       in 1999 as a replacement for a non-free  version,  and  is
       the  current  maintainer  of the procps collection. Please
       send bug reports to <procps-feedback@lists.sf.net>.

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