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comparison operators in sh script

Posted on 2004-10-07
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I have a shell script, written in Bourne shell:

#!/bin/sh

and I want to check if a variable is equal or not equal to something.  For example, I tried using:

if [[ $STATUS = "BUILT" ]] only seems to work with Korn shell
if [[ $STATUS -eq "BUILT" ]] only seems to work with Bash shell

So what are the comparison operators for Bourne shell, preferably is equal to or not equal to?

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Question by:cirruslogic
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Tintin earned 200 total points
ID: 12253262
In bourne shell (and all bourne like shells, ie: ksh, bash etc)

you use

= for string equality
-eq for numeric equality
-lt less than
-gt greater than

and many others.

man test

eg:

if [ $STATUS = BUILT ]

or if STATUS is numeric

if [ $STATUS -eq 0 ]
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