shell conditional testing

Writing about web page http://www.oracle.com/technology/pub/articles/dulaney_test.html

I keep on forgeting the syntax of bash shell condition syntax. So i have to write it down now.

[ condition ] :
note the space between each side the condition when using square brackets.
"[" actu

String Comparation
=, !=, -z (string is null), -n (not null)

Numbers
-eq, -ne, -gt, -lt, le,ge
e.g.:
[ "$number" -eq "10"] or [ $number -gt 30 ]

"0" means true
"1" means false

Hongfeng Sun : 07 Mar 2006 09:42 |  Tags: Unix |  Comments (0) |  Report a problem