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UNIX for Dummies Questions & Answers
grep the number of first occurence
Post 302213782 by neruppu on Friday 11th of July 2008 03:33:18 AM
07-11-2008
grep the number of first occurence
File1.txt
.......
.......
OMC LA
OMC LK
OMC LS
........
........
Above is the content of File1.txt, i want to get the Number of Occurence to order, lets say if OMC LA = 1, OMC LS=3, and OMC LK=2..
omc_ident="OMC LA" or "OMC LK" or "OMC LS"
omc_num=`grep '^OMC' File1.txt| grep -n '^OMC $omc_ident$' | awk -F: '{ print $1 }'`
IF omc_ident is "OMC LS", then the omc_num is 3....
but in return i get a null value, any1 can help me to find out how i can correct this script...
.......
.......
OMC LA
OMC LK
OMC LS
........
........
Above is the content of File1.txt, i want to get the Number of Occurence to order, lets say if OMC LA = 1, OMC LS=3, and OMC LK=2..
omc_ident="OMC LA" or "OMC LK" or "OMC LS"
omc_num=`grep '^OMC' File1.txt| grep -n '^OMC $omc_ident$' | awk -F: '{ print $1 }'`
IF omc_ident is "OMC LS", then the omc_num is 3....
but in return i get a null value, any1 can help me to find out how i can correct this script...
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LEARN ABOUT OPENDARWIN
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 is used to invoke the grep on compress'ed or gzip'ed files. All options specified are passed directly to grep. If no file is speci- fied, 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 zgrep is invoked as zegrep or zfgrep then egrep or fgrep is used instead of grep. If the GREP environment variable is set, zgrep uses it as the grep program to be invoked. For example: for sh: GREP=fgrep zgrep string files for csh: (setenv GREP fgrep; zgrep string files) AUTHOR
Charles Levert (charles@comm.polymtl.ca) SEE ALSO
grep(1), egrep(1), fgrep(1), zdiff(1), zmore(1), znew(1), zforce(1), gzip(1), gzexe(1) ZGREP(1)