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Full Discussion: Egrep -v command not filtering correctly
Top Forums Shell Programming and Scripting Egrep -v command not filtering correctly Post 303033028 by stomp on Thursday 28th of March 2019 05:01:06 PM
Old 03-28-2019
grep does correctly, what you commanded to do.

the regex egrep -v "\*|0" grep.txt matches 10000.

Check the regex manual to improve your understanding of the topic(man 7 regex).

That would be more what you want:

Code:
grep -vE '([^0-9]0|\*)$' grep.txt

This User Gave Thanks to stomp For This Post:
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LEARN ABOUT V7

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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