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Operating Systems AIX Kill multiple processes ran by root Post 303005670 by MadeInGermany on Saturday 21st of October 2017 04:13:01 AM
Old 10-21-2017
The [ ] are special in shell and need to be escaped.
Say you have a file program in your current directory, then the shell replaces [p]rogram by the matching program, and the grep can find its own arguments in the ps args.
Safe is grep "[p]rogram". (It's a good habit to always put the grep argument in quotes!)
Another problem is that xargs runs the kill without arguments if nothing matches.
Suggestion
Code:
pids=$(ps -ef | awk '/[p]rogram/ {print $2}')
[ -n "$pids" ] && sudo kill $pids

Letting awk do the grep is not only more efficient, it also provides means to further add conditions for certain columns.

Last edited by MadeInGermany; 10-21-2017 at 05:21 AM..
 

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ZGREP(1)						    BSD General Commands Manual 						  ZGREP(1)

NAME
zgrep, zegrep, zfgrep -- print lines matching a pattern in gzip-compressed files SYNOPSIS
zgrep [grep-flags] [--] pattern [files ...] zegrep [grep-flags] [--] pattern [file ...] zfgrep [grep-flags] [--] pattern [file ...] DESCRIPTION
zgrep runs grep(1) on files or stdin, if no files argument is given, after decompressing them with zcat(1). The grep-flags and pattern arguments are passed on to grep(1). If an -e flag is found in the grep-flags, zgrep will not look for a pattern argument. zegrep calls egrep(1), while zfgrep calls fgrep(1). EXIT STATUS
In case of missing arguments or missing pattern, 1 will be returned, otherwise 0. SEE ALSO
egrep(1), fgrep(1), grep(1), gzip(1), zcat(1) AUTHORS
Thomas Klausner <wiz@NetBSD.org> BSD
December 28, 2003 BSD
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