Richard Lee wrote:
what is wrong w/ below program???
use warnings;
use strict;
use diagnostics;
#open 'PASSWD', '<', '/etc/passwd' or die "cannot open: $!\n";
open (PASSWD1, "/etc/passwd") or die "cannot open: $!\n";
my $line;
while ( chomp($line = <PASSWD1>) ) {
print "---$line---\n" if $line =~ /root/;
}
seek(PASSWD1, 0, 0) or die "$!\n";
while(<PASSWD1>) { print if /ellie/;}
close PASSWD1;
Use of uninitialized value in chomp at ./seek_.pl line 11 (#1)
(W uninitialized) An undefined value was used as if it were already
defined. It was interpreted as a "" or a 0, but maybe it was a
mistake.
To suppress this warning assign a defined value to your variables.
To help you figure out what was undefined, perl tells you what
operation
you used the undefined value in. Note, however, that perl
optimizes your
program and the operation displayed in the warning may not necessarily
appear literally in your program. For example, "that $foo" is
usually optimized into "that " . $foo, and the warning will refer to
the concatenation (.) operator, even though there is no . in your
program.
I found the problem. this new fedora 9 I guess hides the /etc/passwd
file & is empty file.
Sorry for the trouble guys.
--
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
http://learn.perl.org/
