Korn Shell Programming by Example

if

Official Description

Executes the list following if and, if it returns a 0 (zero) exit status, executes the list following the first then.

Syntax

if list ;then list [elif list ;then list] ... [;else list] ;fi

Options

None

Oddities

At least one command must appear between the then and the fi (it can be a : if you want it to do nothing).

Place numeric tests in (( )); place string tests in [[ ]].

Example

$ x=12
$
$ if (( x == 12 ))
> then
> print "equal"
> else
> print "not equal"
> fi
equal
$