in reply to Re^2: How to write the perl script for the following linux command?
in thread How to write the perl script for the following linux command?

So, what Perl code did you write, for example using the modules I mentioned already, and how does it fail to do what you need?

  • Comment on Re^3: How to write the perl script for the following linux command?

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Re^4: How to write the perl script for the following linux command?
by finddata (Sexton) on Mar 14, 2017 at 12:27 UTC 
    my $sorce_direcrtory = $input_dir;
    my $new_directory = $output_dir;

    opendir(my $dh, $sorce_direcrtory) || die;
    while(readdir $dh) {
        if($_ =~ /.csv/){
            copy("$sorce_direcrtory/$_", "$new_directory/$_");
        }
    }
    closedir $dh;

    [download]
    error: Use of uninitialized value in pattern match (m//)
[reply]
[d/l]

      Usually, Perl also outputs the exact line number where the warning occurs. What line number does your code output?

      I find it unlikely that opendir would succeed but then readdir should return undef.

      Let me recommend to you, again, File::Find, which makes iterating over a directory tree somewhat easier.

[reply]
[d/l]
        the error ocurrs at this line if($_ =~ /.csv/){
[reply]

      What is exact and complete error message ?

      poj
[reply]
        Use of uninitialized value in pattern match (m//) at line 7
[reply]

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