Name
if
Synopsis
if ( condition ) command1 [else command2]
If condition is true, execute command1; otherwise, execute command2. condition can be an expression using any of the relational operators <, <=, = =, !=, >=, or >, as well as the pattern-matching operator ~. A series of commands must be put within braces.
Example
The following line determines whether the first word in each line starts with A, uppercase or lowercase:
if ($1 ~ /[Aa]*/)
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