SKILL(1)							Linux User's Manual							  SKILL(1)

,

NAME

       skill, snice - report process status

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 ...)  Priority numbers range from +20 (slowest) to -20 (fastest).  Negative  priority  num-
       bers 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.

PROCESS SELECTION OPTIONS

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

       -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 are available for use with skill.  When known, numbers and default behavior are shown.

       Name	Num   Action	Description

       ()																	       ()

       ALRM	 14   exit
       HUP	  1   exit
       INT	  2   exit
       KILL	  9   exit	this signal may not be blocked
       PIPE	 13   exit
       POLL	      exit
       PROF	      exit
       TERM	 15   exit
       USR1	      exit
       USR2	      exit
       VTALRM	      exit
       STKFLT	      exit	i386, m68k, arm and ppc hardware only

       UNUSED	      exit	i386, m68k, arm and ppc hardware only
       TSTP	      stop	context-dependent behavior may appear random
       TTIN	      stop	context-dependent behavior may appear random
       TTOU	      stop	context-dependent behavior may appear random
       STOP	      stop	this signal may not be blocked
       CONT	      restart	continue if stopped, otherwise ignore
       PWR	      ignore	may exit on some systems
       WINCH	      ignore
       CHLD	      ignore
       URG	      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 netscape crack +7		  Slow down netscape and crack
       skill -KILL -v pts/*		  Kill users on new-style PTY devices
       skill -STOP torvalds davem tytso   Stop 3 users
       snice -17 root bash		  Give priority to root's shell

SEE ALSO

       top(1) kill(1) renice(1) nice(1)

STANDARDS

       No standards apply.

AUTHOR

       Albert  Cahalan	<acahalan@cs.uml.edu>  wrote  skill  and  snice in 1999 as a replacement for a non-free version. Michael K. Johnson <john-
       sonm@redhat.com> is the current maintainer of the procps collection.

       Please send bug reports to <procps-list@redhat.com>

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