Perl File Test Operators

Operator	Description
-A FILENAME	Return the access age of FILENAME
-b FILENAME	Tests if FILENAME is a block device
-B FILENAME	Tests if FILENAME is a binary file. Can also be applied to a file handle!
-c FILENAME	Tests if FILENAME is a character device
-C FILENAME	Return the inode change age of FILENAME
-A FILENAME	Return the access age of FILENAME
-d FILENAME	Tests if FILENAME is a directory
-e FILENAME	Tests if FILENAME exists
-f FILENAME	Tests if FILENAME is a regular file, not, e.g., a directory
-g FILENAME	Tests if FILENAME has the setgid bit
-k FILENAME	Tests if FILENAME has the sticky bit
-l FILENAME	Tests if FILENAME is a symbolic link
-M FILENAME	Returns age of FILENAME
-o FILENAME	Tests if FILENAME is owned by the current UID
-p FILENAME	Tests if FILENAME is a named pipe
-r FILENAME	Tests if FILENAME is readable
-s FILENAME	Returns size of FILENAME
-S FILENAME	Tests if FILENAME is a socket
-t FILENAME	Tests if FILENAME is opened to a tty
-T FILENAME	Tests if FILENAME is a text file
-u FILENAME	Tests if FILENAME has the setuid bit
-w FILENAME	Tests if FILENAME is writable
-x FILENAME	Tests if FILENAME is executable
-S FILENAME	Tests if FILENAME is a socket
-z FILENAME	Tests if size of FILENAME is zero