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Full Discussion: unix compare two variable
Top Forums UNIX for Dummies Questions & Answers unix compare two variable Post 302372879 by pogdorica on Thursday 19th of November 2009 03:30:21 AM
Old 11-19-2009
Hi.

'Diff' command is used to compare files.

To compare two variables you must use:
Code:
if [ "$var1" = "$var2" ]
.....

 

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DIFF(1) 							   User Commands							   DIFF(1)

NAME
slack-diff - compare file contents, modes, etc SYNOPSIS
slack-diff [OPTION]... FILE1 FILE2 DESCRIPTION
A wrapper for diff that displays file modes and other metadata changes. -u -U NUM --unified[=NUM] Tell diff(1) to use unified output format. --diff PROG Use this program for diffing, instead of diff. --fakediff Make a fake diff for file modes and other things that are not file contents. Default is on, can be disabled with --nofakediff. -r --recursive Recursively compare any subdirectories found. -N --new-file Treat missing files as empty. Default is on, can be disabled with --nonew-file. --unidirectional-new-file Treat only missing files in the first directory as empty. --from-file Treat arguments as a list of files from which to read filenames to compare, two lines at a time. -0 --null Use NULLs instead of newlines as the separator in --from-file mode. --devnullhack You have a version of diff that can't deal with -N when not in recursive mode, so we need to feed it /dev/null instead of the miss- ing file. Default is on, can be disabled with --nodevnullhack. --version Output version info. --help Output this help. FILES are `FILE1 FILE2' or `DIR1 DIR2' or `DIR FILE...' or `FILE... DIR'. If --from-file or --to-file is given, there are no restrictions on FILES. If a FILE is `-', read standard input. SEE ALSO
diff(1) diffutils 2.8.1 April 2002 DIFF(1)
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