04-17-2008
Is grep being used correctly?
My goal is to find files contain the "signal 11" string in a specific directory. I need the file details followed by the string.
I wrote a script to test out and play with Shell command since it's my first time to write a Shell script.
Let me cut the story short...
this command line: if [ 'grep -i "signal 11" $fil' -ne "" ]
returns nothing, but actually in reality, I have couple files contains "signal 11" string.
My question is, why does the script not return a list of files which contains "signal 11"?
Is there anything wrong with my script that you can see?
Thanks in advance!
==========================================
#!/bin/sh
#
RESULT=/disk2/app/applmgr/appltop/cssm_custom/11.5.0/out/W2.out
if [ -f /disk2/app/applmgr/appltop/cssm_custom/11.5.0/out/W2.out ]
then
rm $RESULT
fi
#List all modified files more then 7 days in the Directory
for fil in `find /disk2/app/applmgr/comntop/admin/log/ARDEV_arebdd -type f -mtime +7`
do
#Check if the file contains "signal 11"
#If Yes, print out the file name to the output file.
if [ 'grep -i "signal 11" $fil' -ne "" ]
then
echo "fil = $fil" >> $RESULT
fi
done
===============================================
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LEARN ABOUT OPENDARWIN
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 is used to invoke the grep on compress'ed or gzip'ed files. All options specified are passed directly to grep. If no file is speci-
fied, 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 zgrep is invoked as zegrep or zfgrep then egrep or fgrep is used instead of grep. If the GREP environment variable is set, zgrep uses
it as the grep program to be invoked. For example:
for sh: GREP=fgrep zgrep string files
for csh: (setenv GREP fgrep; zgrep string files)
AUTHOR
Charles Levert (charles@comm.polymtl.ca)
SEE ALSO
grep(1), egrep(1), fgrep(1), zdiff(1), zmore(1), znew(1), zforce(1), gzip(1), gzexe(1)
ZGREP(1)