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Re^3: Help with file test operatorsby jeffa (Bishop) |
on Mar 26, 2015 at 20:48 UTC ( [id://1121459]=note: print w/replies, xml ) | Need Help?? |
Try
If any of the file tests (or either the "stat" or "lstat" operator) is given the special filehandle consisting of a solitary underline, then the stat structure of the previous file test (or stat operator) is used, saving a system call. (This doesn't work with "-t", and you need to remember that lstat() and "-l" leave values in the stat structure for the symbolic link, not the real file.) (Also, if the stat buffer was filled by an "lstat" call, "-T" and "-B" will reset it with the results of "stat _"). Example: print "Can do.\n" if -r $a || -w _ || -x _; stat($filename); print "Readable\n" if -r _; print "Writable\n" if -w _; print "Executable\n" if -x _; print "Setuid\n" if -u _; print "Setgid\n" if -g _; print "Sticky\n" if -k _; print "Text\n" if -T _; print "Binary\n" if -B _;
UPDATE: Just showing you where the information is currently found. If you want to make it more obvious you know exactly how to get that ball rolling on your own. Good luck. jeffa L-LL-L--L-LL-L--L-LL-L-- -R--R-RR-R--R-RR-R--R-RR B--B--B--B--B--B--B--B-- H---H---H---H---H---H--- (the triplet paradiddle with high-hat)
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