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

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Perl » File » 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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3.	To open a file for reading:
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22.	Open for writing first, then reading
23.	Opening an input filter on a Win32 platform
24.	Opening files and using file handles: open(filehandle, name);
25.	Opens two files and copies one into another.
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