in reply to TIMTOWTDI Challenge: Open a file

The sysopen call is sometimes useful for its full range of open modes, and the ability to set file permissions when the file is created.

sysopen FILEHANDLE,FILENAME,MODE,PERMS

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If you fool around with that, use Fcntl;. That lets you take your program to another machine without worrying about differing numeric values for the system constants.

After Compline,
Zaxo

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Re^2: TIMTOWTDI Challenge: Open a file
by McDarren (Abbot) on Apr 18, 2006 at 01:05 UTC
    I use sysopen when I want my scripts to play nicely with each other, and observe locking. eg: 
    use Fcntl qw(:DEFAULT :flock);

sysopen(OUT, $file, O_WRONLY | O_CREAT)
   or die "Cannot open $file for writing:$!\n";
flock(OUT, LOCK_EX)
   or die "Cannot get a lock on $file:$!\n";

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    (That example is pretty much straight out of the book)

    Cheers,
    Darren :)

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