Dealing with files/directories in Perl

Operator     Function                          
-e       Tests if OPERAND exists.          
-f       Tests if OPERAND is a regular file as opposed to a directory,symbolic link or other type of file
-l       Tests if OPERAND is a symbolic link
-s       Returns size of OPERAND in bytes  
-d       Tests if OPERAND is a directory.  
-T       Tests if OPERAND is a text file.  
 
Example:
#!/usr/bin/perl
if(-e "/tmp/test.pl")
 {
     print "File/directory exists.";
 }
 if(-f "/tmp/test.pl")
 {
     print "File exists";
 }
 $size = -s "/tmp/test.pl";
 print "Size of /tmp/test.pl is $size bytes";