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Top Forums Shell Programming and Scripting grep or awk problem, unable to extract numbers Post 302134512 by ghostdog74 on Friday 31st of August 2007 08:25:52 AM
Old 08-31-2007
Quote:
Originally Posted by charbel
Is that number composed of 5 digits only?
if YES, then you can use the awk command and you can print that substring only....

code:
cat input.txt|awk 'BEGIN {FS=":"} {print substr($2,1,5)}'

this may help.....
no need for cat.
Code:
awk 'BEGIN {FS=":"} {print substr($2,1,5)}' input.txt

 

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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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