Linux in a Nutshell, Fifth Edition

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Linux

Commands

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-p Print the process ID of the named process, but don’t send it a

signal. To use this option, specify the full path (e.g., /bin/kill -p).

-s SIGNAL, -SIGNAL

The signal number (from /usr/include/sys/signal.h) or name

(from kill -l). With a signal number of 9 (KILL), the kill

cannot be caught by the process; use this to kill a process that

a plain kill doesn’t terminate. The default is TERM. The letter

flag itself is optional: both kill -9 1024 and kill -s 9 1024

terminate process 1024.

killall

killall [options] names

Kill processes by command name. If more than one process is

running the specified command, kill all of them. Treats command

names that contain a / as files; kill all processes that are executing

that file.

Options

-signal

Send signal to process (default is TERM). signal may be a

name or a number. The most commonly used signal is 9,

which terminates processes no matter what.

-e Require an exact match to kill very long names (i.e., longer

than 15 characters). Normally, killall kills everything that

matches within the first 15 characters. With -e, such entries

are skipped. (Use -v to print a message for each skipped entry.)

-g Kill the process group to which the process belongs.

-i Prompt for confirmation before killing processes.

-l List known signal names.

-q ...