to get the file

String Operations and Functions
• The only operator is period(.) for catenation
• String variables can be treated like arrays for access to
individual characters
• The position can be specified in braces
(Ex) If $str has “apples”, $str{3} is the fourth (l)
• Functions:
• strlen, strcmp, strpos, substr, as in C
• chop – remove whitespace from the right end
• trim – remove whitespace from both ends
• ltrim – remove whitespace from the left end
• strtolower, strtoupper
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