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Full Discussion: Grep with Regular expression now working on file directories
Top Forums Shell Programming and Scripting Grep with Regular expression now working on file directories Post 302963418 by Scrutinizer on Wednesday 30th of December 2015 07:33:53 AM
Old 12-30-2015
With GNU grep, \b matches the empty string at the edge of a word. In the example the \b before the / is not at the edge of a word, because in the example SYSYSID;MANDT;/SIE/AD_Z0M_INDX;/SIE/AD_Z0M_KEY1 it is between a ; and a /. So try:
Code:
Regex='\bSYSYSID\b|\bMANDT\b|\B/SIE/AD_Z0M_INDX\b|\B/SIE/AD_Z0M_KEY1\b'

instead. Then

Code:
grep -Eo "$Regex" sam1

should produce:
Code:
SYSYSID
MANDT
/SIE/AD_Z0M_INDX
/SIE/AD_Z0M_KEY1

 

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LEARN ABOUT POSIX

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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