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Full Discussion: How to grep for message and if found display filename?
Top Forums Shell Programming and Scripting How to grep for message and if found display filename? Post 302443849 by bartus11 on Tuesday 10th of August 2010 08:23:03 AM
Old 08-10-2010
Code:
find . -type f -name "*.log" | xargs -i bash -c "tail -n 2 {} | grep -v FAILED | grep FAIL && basename {}"



---------- Post updated at 07:23 AM ---------- Previous update was at 07:20 AM ----------
Quote:
Originally Posted by pravin27
Hi Bartus11,

Could you please explain the xargs code ?
Code:
find . -type f -name "*.log" | xargs -i bash -c "tail -n 2 {} | grep -w FAIL && echo {}"

I think instead of using grep two times we can use grep with -w option.
With xargs -i, you can use "{}" where arguments need to be passed. So here it will be substituted with same file name in two places for every file passed from "find" utility.
 

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LEARN ABOUT NETBSD

zfgrep

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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