Checks whether an unopened file actually exists. : Open file « File « Perl






  1. Perl
  2. File
  3. Open file

Checks whether an unopened file actually exists.

    
#!/usr/local/bin/perl 

unless (open(MYFILE, "file1")) { 
  if (-e "file1") { 
     die ("File file1 exists, but cannot be opened.\n"); 
  } else { 
     die ("File file1 does not exist.\n"); 
  } 
} 
$line = <MYFILE>; 
while ($line ne "") { 
   chop ($line); 
   print ("\U$line\E\n"); 
   $line = <MYFILE>; 
}








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