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     1    #!/usr/bin/env perl
     2    use strict;
     3    use warnings;
...
    43    $ftp->login($user, $pass);
    44    $ftp->cwd($dir_name);
    45    my @dir = $ftp->ls();

~/bin# ./test.pl
"my" variable $host masks earlier declaration in same scope at ./ftp-t
+est.pl line 42.
"my" variable $ftp masks earlier declaration in same scope at ./ftp-te
+st.pl line 43.
"my" variable $user masks earlier declaration in same scope at ./ftp-t
+est.pl line 43.
"my" variable $pass masks earlier declaration in same scope at ./ftp-t
+est.pl line 43.
"my" variable $ftp masks earlier declaration in same scope at ./ftp-te
+st.pl line 44.

# Append a '/' to directories if needed
if ($target_dir ~! m{\/$}) { $target_dir .= '/'; }
if ($tmp_dir ~! m{\/$})  { $tmp_dir .= '/'; }

# Append a '/' to directories if needed
$target_dir .= '/' unless ($target_dir =~ m{\/$});
$tmp_dir .= '/' unless ($tmp_dir =~ m{\/$});