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Perl Programming/Keywords/-s
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Perl -S -T Keywords
The -s keyword
-s is a file test that tests, if the file has nonzero size (returns size in bytes).
It takes one argument, either a FILENAME, a FILEHANDLE, or a DIRHANDLE to test the associated file to see, if something is true about it. If the argument is omitted, it tests $_. -s returns 1 for true and an empty string for false. If the file doesn't exist or can't be examined, it returns undef and sets $! (errno).
Syntax
-s DIRHANDLE
-s EXPRESSION
-s FILEHANDLE
-s FILENAME
-s
Perl -S -T Keywords
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