Perl backticks: flags do not exist

Question

When executing the following segment of code,

sub list {
    my($self)=@_;
    my $file = $self->{P_Dir}."/".$self->{Name};
    print `ls –l $file`;
}

I get this error:

ls: cannot access –l: No such file or directory

I am not really sure what is causing that, since if I manually type ls -l into the command line, I do not see that error.

score 8 · Accepted Answer · edited Nov 09 '12 at 18:27

8

That – that you've thankfully copy & pasted is a Unicode en dash character (U+2013) and not the ASCII hyphen character - (U+002D).

edited Nov 09 '12 at 18:27

cjm

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answered Nov 09 '12 at 15:45

Moritz Bunkus

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Yes, it seems somewhere copying between Windows and my Linux VM they changed. I should be more careful. Thanks! – fishpen0 Nov 09 '12 at 21:03

score 0 · Answer 2 · answered Nov 09 '12 at 16:23

0

Hmmm... It works for me though:

$ cat test.pl 
#!/usr/bin/perl -w
use strict;
my $file = "rpm.pl";
print `ls -l $file`;

$ perl test.pl 
-rw-r--r-- 1 dheeraj dheeraj 922 2012-10-22 19:56 rpm.pl

answered Nov 09 '12 at 16:23

slayedbylucifer

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Perl backticks: flags do not exist

2 Answers2