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Perl Programming/Keywords/-o
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Perl -O -p Keywords
The -o keyword
-o is a file test that tests, if the file is owned by effective uid.
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 $_. -o 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
-o DIRHANDLE
-o EXPRESSION
-o FILEHANDLE
-o FILENAME
-o
Perl -O -p Keywords
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