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The Lounge War Stories Interesting script issue clubbed with crontab. Post 303006555 by bakunin on Friday 3rd of November 2017 10:57:04 AM
Old 11-03-2017
Quote:
Originally Posted by RavinderSingh13
find -type f -exec grep -l "old_user" {} \+
A trick i have learned here (and i am ashamed i can't remember from who) is to always add a second file to grep when using it this way.

grep, when called with a single file, will not show the file name where it found something:

Code:
find /some/where -type f -exec grep "bla foo" {} \;
whatever bla foo something
another hit bla foo
....

But write it like this:
Code:
find /some/where -type f -exec grep "bla foo" /dev/null {} \;

and grep will add the file names of the files at the beginning of the line.

bakunin
This User Gave Thanks to bakunin For This Post:
 

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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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