(Linux) A more user-friendly "kill". A bit more ease of use never hurts. This isn't all that friendly though. For example, while "skill -iu fred" happily brings up each of fred's processes for you to kill or not, "skill -i -u fred" just does nothing - doesn't even give a non-zero exit status. Nor can you combine options: no "skill -ut fred pts/0" etc.
Still, this is marginally better than "kill" and has a few more options than "killall". Man page for those not near a Linux system just now:
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 ...) 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. PROCESS SELECTION OPTIONS Selection criteria can be: terminal, user, pid, command. The options below may be used to ensure correct interpre? tation. -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 >email@example.com< wrote skill and snice in 1999 as a replacement for a non-free version. Michael K. Johnson <firstname.lastname@example.org> is the current maintainer of the procps collection. Please send bug reports to <email@example.com>
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More Articles by Tony Lawrence © 2011-07-07 Tony Lawrence