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Full Discussion: Switch User in within a Shell Script
Top Forums Shell Programming and Scripting Switch User in within a Shell Script Post 302466949 by Chubler_XL on Wednesday 27th of October 2010 07:14:09 PM
Old 10-27-2010
Yes that should be fine, just grep for [X]YZ instead.

The square brackets tell grep match any of the following single characters (a single X here). So this will find XYZ, but because the command line of the grep has the square brackets, grep wont match it's self and we avoid killing the grep command. eg:

Code:
# ps -ef | grep ntpd
    root  278664  209062   0   Oct 03      -  1:03 /usr/sbin/xntpd 
    root 1540282  659564   0 09:11:58 pts/29  0:00 grep ntpd

Code:
# ps -ef | grep [n]tpd
    root  278664  209062   0   Oct 03      -  1:03 /usr/sbin/xntpd

2>&1 means redirect standard error (the stream most error messages are printed on) to the same location as standard output. This will allow your log to capture both normal program output and any error messages on the error stream.
This User Gave Thanks to Chubler_XL For This Post:
Afi_Linux
 

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LEARN ABOUT XFREE86

zgrep

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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