On Jan 3, 2005, at 4:27 PM, Eric F Crist wrote:
Good to know. If I want to validate, like my first example, against some variables, how would I do that best. Say, for example, I have 4 possible entries for grog_firewall_enable but I want to single out three of them:
if [ "$grog_firewall_enable" <> "YES" OR "NO" OR "OPEN" ]
is this the correct syntax? Can't seem to figure this one out.
Instead of <> you want to use != when working in (ba)sh.
I no of no way to test A != (B or C or D) on one line like that in bash.
I think the closest you can come is using 'case':
case $grog_firewall_enable in
YES|NO|OPEN)
:
;; *)
echo Illegal value for grog_firewall_enable
;;
esacthe ":" in that case is just a placeholder. You could replace it with some commands, even your previous IF/ELIF statements if you wanted to.
TjL
ps - in case it wasn't obvious, and it wasn't to me when I first started, "fi" is "if" spelled backwards and "esac" is "case" spelled backwards. Makes it easier to remember how to spell them correctly ;-)
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