Linux Commands Examples

A great documentation place for Linux commands

bzgrep

, bzfgrep, bzegrep search possibly bzip2 compressed files for a regular expression


see also : bzfgrep - bzegrep - grep - egrep - fgrep - bzdiff - bzmore - bzless - bzip2

Synopsis

bzgrep [ grep_options ] [ -e ] pattern filename...
bzegrep [ egrep_options ] [ -e ] pattern filename...
bzfgrep [ fgrep_options ] [ -e ] pattern filename...


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examples

0
source 
            

  temp=$dammit/pagecounts/temp






  bzgrep -v '^#' $merged/pagecounts-2011-12-views-ge-5.bz2
  | awk '{print $1" "$2"
  "$3}' | bzip2 > $merged/pagecounts-2011-12-views-ge-5-totals.bz2




  bzgrep -v '^#' $merged/pagecounts-2011-12-views-ge-5.bz2
  | awk '{print $1" "$2"
  "$3}' | bzip2 > $merged/pagecounts-2011-12-views-ge-5-totals.bz2




  bzgrep -v '^#' $merged/pagecounts-2012-01-views-ge-5.bz2
  | awk '{print $1" "$2"
  "$3}' | bzip2 > $merged/pagecounts-2012-01-views-ge-5-totals.bz2
0
source 
            

  bzgrep "GET /mediahub/channels/"
  www1.unl.edu-access_log | awk '{ print $7 }' | grep -v
  format=xml
  | sort | uniq -c
  | sort -nr | head
  -n 10 > popular_channels.txt

description

Bzgrep is used to invoke the grep on bzip2-compressed files. All 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 bzgrep is invoked as bzegrep or bzfgrep then egrep or fgrep is used instead of grep. If the GREP environment variable is set, bzgrep uses it as the grep program to be invoked. For example:

for sh: GREP=fgrep bzgrep string files
for csh: (setenv GREP fgrep; bzgrep string files)


see also

grep , egrep , fgrep , bzdiff , bzmore , bzless , bzip2


author

Charles Levert (charles[:at:]comm.polymtl[:dot:]ca). Adapted to bzip2 by Philippe Troin <phil[:at:]fifi[:dot:]org> for Debian GNU/Linux.

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