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Top Forums Shell Programming and Scripting grep or awk problem, unable to extract numbers Post 302134292 by vino on Thursday 30th of August 2007 07:41:28 AM
Old 08-30-2007
The pattern is not very clear. But you can try

Code:
grep -oE "[[:digit:]]{1,}" input.txt

If that does not satisfy your requirement, perhaps this.

Code:
sed -n -e "s/.*:\([0-9]*\).*/\1/p" input.txt

 

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ZGREP(1)						    BSD General Commands Manual 						  ZGREP(1)

NAME
zgrep, zegrep, zfgrep -- print lines matching a pattern in gzip-compressed files SYNOPSIS
zgrep [grep-flags] [--] pattern [files ...] zegrep [grep-flags] [--] pattern [file ...] zfgrep [grep-flags] [--] pattern [file ...] DESCRIPTION
zgrep runs grep(1) on files or stdin, if no files argument is given, after decompressing them with zcat(1). The grep-flags and pattern arguments are passed on to grep(1). If an -e flag is found in the grep-flags, zgrep will not look for a pattern argument. zegrep calls egrep(1), while zfgrep calls fgrep(1). EXIT STATUS
In case of missing arguments or missing pattern, 1 will be returned, otherwise 0. SEE ALSO
egrep(1), fgrep(1), grep(1), gzip(1), zcat(1) AUTHORS
Thomas Klausner <wiz@NetBSD.org> BSD
December 28, 2003 BSD
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