On Fri, Nov 02, 2001 at 09:58:02AM +0800, feliciahk ([EMAIL PROTECTED]) said something similar to: > From: "Carl Rogers" <[EMAIL PROTECTED]> > To: "shalini Raghavan" <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]>; > <[EMAIL PROTECTED]> > > > open (MYFILE, ">>file_to_append_to.txt") or die "Can't open $!\n"; > > > > Strange ! I sees the above openings in almost every script. What I could not > understand is the reason for putting the die statement when the above > statement will never "die". If the file is not there, it will create the > file. > > Is there a legitamate reason.
Sure is: (root@perlguy):/usr/home/kevin> # whoami root (root@perlguy):/usr/home/kevin> # ls -la foo.txt -rw-r--r-- 1 root sys 0 Nov 1 21:24 foo.txt (root@perlguy):/usr/home/kevin> # su kevin (kevin@perlguy):/usr/home/kevin> $ ls -la foo.pl -rw-r--r-- 1 kevin kevin 73 Nov 1 21:25 foo.pl (kevin@perlguy):/usr/home/kevin> $ more foo.pl #!/usr/bin/perl open(FH, ">>foo.txt") or die "Bad boy! ($!)"; close FH; (kevin@perlguy):/usr/home/kevin> $ perl foo.pl Bad boy! (Permission denied) at foo.pl line 3. So, that is one reason. The person running the script may not have proper permissions to append to a file, so the death of the script is legit. I sure don't want 'kevin' appending to my /etc/passwd file :) Cheers, Kevin -- [Writing CGI Applications with Perl - http://perlcgi-book.com] I think you should leave it up to the parent, because not all parents want to keep their children totally ignorant. -- Frank Zappa (response to a question from Senator Hollings) -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
