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Full Discussion: Unix Compare Files
Top Forums UNIX for Dummies Questions & Answers Unix Compare Files Post 302267016 by joeyg on Thursday 11th of December 2008 01:19:02 PM
Old 12-11-2008
Hammer & Screwdriver Here is one approach

Beware that the following will check if entries for file109 exist anywhere on a line in file108; thus you might need to modify if possible that those strings might exist otherwise.
Also, different versions of unix would use grep or egrep.

Code:
> cat file108
1252652355 Joe
1859553322 Linda
1778899562 Kerrin
> cat file109
1252652355
1859553322

> egrep -v -f file109 file108
1778899562 Kerrin

 

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XZGREP(1)							     XZ Utils								 XZGREP(1)

NAME
xzgrep - search compressed files for a regular expression SYNOPSIS
xzgrep [grep_options] [-e] pattern file... xzegrep ... xzfgrep ... lzgrep ... lzegrep ... lzfgrep ... DESCRIPTION
xzgrep invokes grep(1) on files which may be either uncompressed or compressed with xz(1), lzma(1), gzip(1), or bzip2(1). All options specified are passed directly to grep(1). If no file is specified, then the standard input is decompressed if necessary and fed to grep(1). When reading from standard input, gzip(1) and bzip2(1) compressed files are not supported. If xzgrep is invoked as xzegrep or xzfgrep then egrep(1) or fgrep(1) is used instead of grep(1). The same applies to names lzgrep, lze- grep, and lzfgrep, which are provided for backward compatibility with LZMA Utils. ENVIRONMENT
GREP If the GREP environment variable is set, xzgrep uses it instead of grep(1), egrep(1), or fgrep(1). SEE ALSO
grep(1), xz(1), gzip(1), bzip2(1), zgrep(1) Tukaani 2009-07-05 XZGREP(1)
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