On Wed, Jul 22, 2009 at 18:04, Owen<rc...@pcug.org.au> wrote:
snip
> It works for me. So try this
snip
Try this, it simulates what is probably happening:
#!/usr/bin/perl
use strict;
use warnings;
my $fakefile = "6754\r\n7890\r\n6543\r\n";
open my $fh, "<", \$fakefile
or die "could not open the fake file: $!";
my @array;
while (my $line = <$fh>) {
chomp $line;
push @array, $line;
}
print "@array\n";
a quick change to get rid of the carriage returns fixes the problem:
#!/usr/bin/perl
use strict;
use warnings;
my $fakefile = "6754\r\n7890\r\n6543\r\n";
open my $fh, "<", \$fakefile
or die "could not open the fake file: $!";
my @array;
while (my $line = <$fh>) {
$line =~ s/[\r\n]//g;
push @array, $line;
}
print "@array\n";
This mostly comes up when data is transferred from Windows machines
(where end-of-line is carriage return and line feed) to UNIX machines
(where end-of-line is just line feed). The carriage return causes the
terminal cursor to go back to the start of the line, so the print
keeps overwriting the numbers. You can see what is actually being
printed out by saying
perl script.pl | cat -e
This prints out something like:
6754^M 7890^M 6543^M$
Another option is to use od:
perl script.pl | od -a
which prints out
0000000 6 7 5 4 cr sp 7 8 9 0 cr sp 6 5 4 3
0000020 cr nl
0000022
--
Chas. Owens
wonkden.net
The most important skill a programmer can have is the ability to read.
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