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Full Discussion: Grepping for variable in brackets
Top Forums Shell Programming and Scripting Grepping for variable in brackets Post 302777947 by Don Cragun on Friday 8th of March 2013 08:34:10 PM
Old 03-08-2013
Quote:
Originally Posted by newbie2010
Thanks for your suggestion, but I did get it solved:
I tried this:
Code:
cat /usr/openv/netbackup/logs/bptm/log.030713 |egrep "\[$bpx\]"

egrep worked for me don't know why grep didn't.
I think you're kidding yourself.

The grep and egrep utilities should treat these expressions the same way. We need to see how you are setting bpx (or in your earlier example var) and a sample of the lines in your input file that you expect the expression to match to figure our what is really going on here.

And, for the record:
Code:
cat file|grep expression

is much more efficiently written as:
Code:
grep expression file

 

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LEARN ABOUT PHP

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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