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Full Discussion: Match 2 patterns together
Top Forums Shell Programming and Scripting Match 2 patterns together Post 302937141 by clx on Wednesday 4th of March 2015 12:47:57 AM
Old 03-04-2015
Few points,

- You don't need inner loop as grep access files as parameters not string. If you want to pass string, you have to pass as STDIN.
- You seem to be using array, but it doesnt work like this.

As your pattern file is delimited by white-spaces :

Code:
while read id pat1 pat2
do
  echo $id  >> results_file # print ID
  echo >> results_file # print newline
  grep $pat1 datafile | grep $pat2 >>  results_file  # print matching lines
done < patfile

This User Gave Thanks to clx For This Post:
abh.kumar
 

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LEARN ABOUT NETBSD

zgrep

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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