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Top Forums UNIX for Dummies Questions & Answers Printing lines with specific strings at specific columns Post 302850477 by bakunin on Thursday 5th of September 2013 12:03:46 AM
Old 09-05-2013
The same in "grep" (replace "<tab>" with literal tab characters why typing):

exact match:

Code:
grep '^chr6<tab>chr6<tab>' /path/to/file

substring match:

Code:
grep '^[^<tab>]*chr6[^<tab>]*<tab>[^<tab>]*chr6[^<tab>]*<tab>' /path/to/file

I hope this helps.

bakunin
 

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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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