IF

IF is a DCL command that tests the value of an expression and, depending on the syntaxspecified, executes the following: o One command following the THEN keyword if the expression is true o Multiple commands following the $THEN command if the expression is true o One or more commands following the $ELSE command if the expression is false

Syntax

$ IF  expression THEN [$] command

or

$ IF  expression 
$ THEN 
$ command
$ [command]
$ ENDIF

or

$ IF  expression 
$ THEN 
$ command
$ [command]
$ ELSE
$ command
$ [command]
$ ENDIF