bash

Bash : Compound condition using && (AND) and || (OR) operators

Submitted by khairie on Mon, 06/21/2010 - 17:47
Related Terms :
To have compound conditions in bash using && or ||:- 
if [ $VAR1 -eq 1 ] && [ "$VAR2" == "true" ]
then
    # do something
fi
 
if [ "$VAR1" == "String 1" ] || [ "$VAR2" == "String 2" ]
then
    # do something
fi

Reference: http://www.museum.state.il.us/ismdepts/library/linuxguides/abs-guide/ops.html#ANDOR

Bash : Compare Strings With Spaces

Submitted by khairie on Tue, 06/15/2010 - 13:01
Related Terms :

To compare two strings that contain spaces in bash, enclose them with a double quote (e.g.  "$VAR" ). Example below:-

if [ "$VAR" == "this is a string with spaces" ]
then
    # do something
fi

Reference: http://hacktux.com/bash/string

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