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Full Discussion: How-to check if file1 a subset of file2 ?
Top Forums Shell Programming and Scripting How-to check if file1 a subset of file2 ? Post 302985943 by rbatte1 on Thursday 17th of November 2016 08:13:13 AM
Old 11-17-2016
You can also use the -vf flags of grep something like this:-
Code:
grep -vf file2 file1

This will display lines from file1 that are not in file2. No output infers that file1 lines are all found in file2, however there is no consideration on the order of the lines, if there are duplicate lines etc.


Would this do what you need?

I haven't got a SunOS server available to test on, so you might need to adjust your code to perhaps use fgrep and drop the -f flag.



Robin
Last edited by rbatte1; 11-17-2016 at 09:15 AM.. Reason: Note about 'grep -vf' maybe needing to become 'fgrep -v'
This User Gave Thanks to rbatte1 For This Post:
mohtashims
 

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LEARN ABOUT LINUX

xzdiff

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 xzdiff 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(1) or diff(1).  If only one file is specified, then the files compared are file1 (which must have a suffix of  a  supported
       compression 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(1) or diff(1) 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 							    2010-09-27								 XZDIFF(1)
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