1:skill
From Linux Man Pages
skill, snice - send a signal or report process status
Contents |
SYNOPSIS
skill [signal to send] [options] process selection criteria
snice [new priority] [options] process selection criteria
DESCRIPTION
These tools are probably obsolete and unportable. The command syntax is poorly defined. Consider using the kil-
lall, 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. (snice +4 ...) Priority numbers range from +20 (slowest) to -20 (fastest).
Negative priority numbers are restricted to administrative users.
GENERAL OPTIONS
l l l. -f fast mode This is not currently useful. -i interactive use T{ You will be asked to approve
each action. T} -v verbose output T{ Display information about selected processes. T} -w warnings
enabled This is not currently useful. -n no action This only displays the process ID. -V show ver-
sion Displays version of program.
PROCESS SELECTION OPTIONS
Selection criteria can be: terminal, user, pid, command. The options below may be used to ensure correct inter-
pretation. Do not blame Albert for this interesting interface.
l l. -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.
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lB rB lB lB lfCW r l l. Name Num Action Description 0 0 n/a exit code indicates if a signal may be
sent 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 STK-
FLT exit may not be implemented PWR ignore may exit on some systems WINCH ignore
CHLD ignore 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
lB lB lfCW l. 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
RELATED
killall(1) pkill(1) kill(1) renice(1) nice(1) signal(7) kill(2)
STANDARDS
No standards apply.
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