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skill [signal to send] [options] process selection criteria
snice [new priority] [options] process selection criteria
These tools are probably obsolete and unportable. The command syntax is
poorly defined. Consider using the killall, pkill, and pgrep commands
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
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.
-f fast mode This is not currently useful.
-i interactive use You will be asked to approve each
-v verbose output Display information about selected
-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 interpretation. Do not blame
Albert for this interesting interface.
-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.
The signals listed below may be available for use with skill. When
known, numbers and default behavior are shown.
Name Num Action Description
PWR ignore may exit on some systems
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
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
killall(1) pkill(1) kill(1) renice(1) nice(1) signal(7) kill(2)
No standards apply.
Albert Cahalan <firstname.lastname@example.org> 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-feed-