File exists or not

 
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Old 05-11-2018
Dear RudiC,

The pattern is being searched in directory where in all the files are compressed hence the command gzgrep.

I will try a different approach to my script to obtain better result for 2nd part of my requirement. Thanks a ton for your precious time.

Regards
Gaurav Kumar
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LOOKBIB(1)						      General Commands Manual							LOOKBIB(1)

NAME
lookbib - search bibliographic databases SYNOPSIS
lookbib [ -v ] [ -istring ] [ -tn ] filename... It is possible to have whitespace between a command line option and its parameter. DESCRIPTION
lookbib prints a prompt on the standard error (unless the standard input is not a terminal), reads from the standard input a line contain- ing a set of keywords, searches the bibliographic databases filename... for references containing those keywords, prints any references found on the standard output, and repeats this process until the end of input. For each database filename to be searched, if an index filename.i created by indxbib(1) exists, then it will be searched instead; each index can cover multiple databases. OPTIONS
-v Print the version number. -istring When searching files for which no index exists, ignore the contents of fields whose names are in string. -tn Only require the first n characters of keys to be given. Initially n is 6. FILES
filename.i Index files. SEE ALSO
refer(1), lkbib(1), indxbib(1) Groff Version 1.18.1 27 June 2001 LOOKBIB(1)