This is not good...

I tried to extend it to:

#!/usr/bin/perl -wpi
my $src = shift;
my $dst = shift;
s/$src/$dst/g;
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and it throws many many messages on me:

Use of uninitialized value in substitution (s///) at /home/rj/bin/repl
+ace line 4, <> line 38.
Use of uninitialized value in regexp compilation at /home/rj/bin/repla
+ce line 4, <> line 39.
Use of uninitialized value in substitution (s///) at /home/rj/bin/repl
+ace line 4, <> line 39.
Use of uninitialized value in regexp compilation at /home/rj/bin/repla
+ce line 4,
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(called "replace hallo hello tmp.txt")
Then I looked at man perl what this switch -p does
ok it was not there, so I looked at man perlrun and
then I found the error (it tries to get $src and $dst in every
loop. Well, I´m using my old replace script now again...

#!/usr/bin/perl
my $src = shift;
my $dst = shift;
 
print "Replace >$src< with >$dst<.\n";
 
$dst =~ s/\\n/\n/g;
$dst =~ s/\\t/\t/g;
 
foreach $file (@ARGV) {
    my $file2 = "/tmp/$file.".$$;
 
    print "replacing in File: $file...\n";
    print "$file2\n";
    open HANDLE, $file or die "$file: $!";
    while(<HANDLE>) {
        $zeile .= $_;                    # Zeile von Datei einlesen
    }
    close HANDLE;
 
    $zeile =~ s/$src/$dst/gs;
 
    open HANDLE, ">$file2";
    print HANDLE $zeile;
    close HANDLE;
    $zeile = '';
    system("mv $file2 $file");
}
[download]

Its ugly and unelegant and made 1996, but it works. :-)

Ciao