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Full Discussion: Command assigned to a variable is failed or not having any data - error
Top Forums Shell Programming and Scripting Command assigned to a variable is failed or not having any data - error Post 302984305 by abhii on Monday 24th of October 2016 09:20:35 AM
Old 10-24-2016
Quote:
Originally Posted by RudiC
You have three greps in your code - so which one is the culprit? Is it possible that some command is trying to read from the terminal becaues e.g. $filename is not set? Is $i defined, or empty?

Still it might be worthwhile to step back and reconsider the entire approach. The comments in your other thread, esp. this post and post#11 there still apply. The entire thing might be doable in one single awk script.
The below code fails as there will be no file having such pattern. $i is not available in the log files at start of the day till evening.in that case the below grep fails.
grep $i /home/lim/updates/logs/log*$d*
If this fails automatically the next two grep/awk fails.
Currently the working condition for me is using if and based on that proceed with script.
 

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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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