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logicalfuzz

01-29-2010 08:55 AM

is there a '?:' syntax shell script?

This might be a quickie... but i am not able to understand the appropriate thing to put in the google search...

Is there a way to use the ?: operator for if-else decision in a shell script?

edit: the 'question mark - colon' operator
(just editing so that its searchable by someone in need :-P)

pixellany

01-29-2010 09:05 AM

For those who don't already know, please tell us what that operator does.

In an "if" construct, the branching is based on whether a statement evaluates to TRUE or FALSE. Thus you can use any operator you want, as long as you wind up with something that produces a true or false output.

Tell us what you are trying to do, and we can give better help....

rn_	01-29-2010 09:19 AM

Are you referring to the C-style clause:

Code:

var = (condition) ? return-value-if-true : return-value-if-false

?

You can sort of emulate this behavior, like so:

Code:

myvar=`[[ condition ]] && echo return-value-if-true || echo return-value-if-false`

logicalfuzz

01-29-2010 09:26 AM

Quote:

Originally Posted by rn_ (Post 3844953)

Are you referring to the C-style clause:

Code:

var = (condition) ? return-value-if-true : return-value-if-false

?

You can sort of emulate this behavior, like so:

Code:

myvar=`[[ condition ]] && echo return-value-if-true || echo return-value-if-false`

hey yes.. i was refering to the c-style clause...
and thanks a lot mate! Thats precisely what i needed

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