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Full Discussion: Kill multiple processes ran by root
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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LEARN ABOUT LINUX

zegrep

ZGREP(1)                                                      General Commands Manual                                                     ZGREP(1)

NAME

       zgrep - search possibly compressed files for a regular expression

SYNOPSIS

       zgrep [ grep_options ] [ -e ] pattern filename...

DESCRIPTION

       Zgrep  invokes  grep  on  compressed  or  gzipped  files.   These  grep  options  will  cause  zgrep  to  terminate  with  an  error  code:
       (-[drRzZ]|--di*|--exc*|--inc*|--rec*|--nu*).  All other options specified are passed directly to grep.  If no file is specified,  then  the
       standard input is decompressed if necessary and fed to grep.  Otherwise the given files are uncompressed if necessary and fed to grep.

       If the GREP environment variable is set, zgrep uses it as the grep program to be invoked.

EXIT CODE

       2 - An option that is not supported was specified.

AUTHOR

       Charles Levert (charles@comm.polymtl.ca)

SEE ALSO

       grep(1), gzexe(1), gzip(1), zdiff(1), zforce(1), zmore(1), znew(1)

                                                                                                                                          ZGREP(1)
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