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Full Discussion: BASH Pipe question
Top Forums UNIX for Dummies Questions & Answers BASH Pipe question Post 302355476 by mgrahamnz on Tuesday 22nd of September 2009 07:45:12 PM
Old 09-22-2009
BASH Pipe question

Hi all,

I'm new to shell scripting, but enjoying myself! Smilie

I'm trying to execute the following statement:
alias evol="ps -AH | grep evol | cut -d' ' -f2 | kill -9"

As you might guess. I'm wanting to use a single command 'evol' to kill all the processes containing the phrase 'evol' (having some trouble with my evolution-exchange connector which keeps hanging on address look-ups. Anyway - killing evolution isn't enough - I thenm have to kill all the other processes, usually 4 of them. the repetition of searching for the pids and then killing them is getting to me Smilie).

I find the bit up until the last pipe is fine. It produces a nice little list of pids to kill. After that though, kill throws an error. I suspect its something to do with the format of the list I'm trying to pipe to it...Smilie

Any help?

Regards, Mark
 

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KILL(1)                                                            User Commands                                                           KILL(1)

NAME
kill - send a signal to a process SYNOPSIS
kill [options] <pid> [...] DESCRIPTION
The default signal for kill 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 or -KILL. Negative PID values may be used to choose whole process groups; see the PGID column in ps command output. A PID of -1 is special; it indicates all processes except the kill process itself and init. OPTIONS
<pid> [...] Send signal to every <pid> listed. -<signal> -s <signal> --signal <signal> Specify the signal to be sent. The signal can be specified by using name or number. The behavior of signals is explained in sig- nal(7) manual page. -l, --list [signal] List signal names. This option has optional argument, which will convert signal number to signal name, or other way round. -L, --table List signal names in a nice table. NOTES Your shell (command line interpreter) may have a built-in kill command. You may need to run the command described here as /bin/kill to solve the conflict. EXAMPLES
kill -9 -1 Kill all processes you can kill. kill -l 11 Translate number 11 into a signal name. kill -L List the available signal choices in a nice table. kill 123 543 2341 3453 Send the default signal, SIGTERM, to all those processes. SEE ALSO
kill(2), killall(1), nice(1), pkill(1), renice(1), signal(7), skill(1) STANDARDS
This command meets appropriate standards. The -L flag is Linux-specific. AUTHOR
Albert Cahalan <albert@users.sf.net> wrote kill in 1999 to replace a bsdutils one that was not standards compliant. The util-linux one might also work correctly. REPORTING BUGS
Please send bug reports to <procps@freelists.org> procps-ng October 2011 KILL(1)
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