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Top Forums Shell Programming and Scripting Assigning variable to output gives error with expected result Post 302983374 by disedorgue on Monday 10th of October 2016 05:36:41 PM
Old 10-10-2016
Hi,
In complement to say RudiC, you could use also option -m nth occurence (if available):
Code:
$ grep -A1 -m 1 "John F" file | tail -1
4433 Street No 88 CA
$ grep -A1 -m 2 "John F" file | tail -1
9399 Southpark No 02D UT

Beware: One line with 2 occurrences will count for 2 to -m option. So in this case, if you would second line with occurence you must set -m 3.

Regards.
 

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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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