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Full Discussion: Finding names in multiple files - second attempt
Top Forums UNIX for Dummies Questions & Answers Finding names in multiple files - second attempt Post 302297134 by Lakris on Thursday 12th of March 2009 02:44:23 PM
Old 03-12-2009
Quote:
Originally Posted by Rally_Point
I've thought that maybe there's a way to walk through the first file and with each line then walk through each line in the second file (something like a nested loop statement) and then go from there.
Thanks
Hi, have You tried this?

Something like:

Code:
while read name;do grep "$name" file2;done < file1

And You could do something like:

Code:
while read name;do echo $name:;grep "$name" file2;done < file1

Or some other action based on return value of grep?

Code:
while read name;do ;grep -q "$name" file2 && echo $name found in file2;done < file1

And it would help if You could show the source of the file, if this doesn't work. Have You considered sorting the files and using diff?

Best regards
/Lakris
 

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LEARN ABOUT SUSE

xzcmp

XZDIFF(1)							     XZ Utils								 XZDIFF(1)

NAME

       xzcmp, xzdiff, lzcmp, lzdiff - compare compressed files

SYNOPSIS

       xzcmp [cmp_options] file1 [file2]
       xzdiff [diff_options] file1 [file2]
       lzcmp [cmp_options] file1 [file2]
       lzdiff [diff_options] file1 [file2]

DESCRIPTION

       xzcmp  and  xdiff invoke cmp(1) or diff(1) on files compressed with xz(1), lzma(1), gzip(1), or bzip2(1).  All options specified are passed
       directly to cmp or diff.  If only one file is specified, then the files compared are file1 (which must have a suffix of	a  supported  com-
       pression  format)  and  file1 from which the compression format suffix has been stripped.  If two files are specified, then they are uncom-
       pressed if necessary and fed to cmp(1) or diff(1).  The exit status from cmp or diff is preserved.

       The names lzcmp and lzdiff are provided for backward compatibility with LZMA Utils.

SEE ALSO

       cmp(1), diff(1), xz(1), gzip(1), bzip2(1), zdiff(1)

BUGS

       Messages from the cmp(1) or diff(1) programs refer to temporary filenames instead of those specified.

Tukaani 							    2009-07-05								 XZDIFF(1)
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