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Full Discussion: Grep -F for special character
Top Forums Shell Programming and Scripting Grep -F for special character Post 302879618 by Yoda on Friday 13th of December 2013 11:30:08 AM
Old 12-13-2013
Remove that -F option if you are using regular expression. It treats each pattern specified as a string instead of a regular expression.
Code:
$ cat file
line 1 EXEC CASH$$A

Code:
$ a='CASH$$A'
$ /usr/xpg4/bin/grep "EXEC *$a" file
line 1 EXEC CASH$$A

 

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LEARN ABOUT X11R4

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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