For tr at a given pos: 
#!/usr/bin/perl -w
use strict;

my @strings = qw(johnny cash willie nelson);
my $pos = 0;

for my $i (0..$#strings) {
    my @tmp = split ('', $strings[$i]);
    $tmp[$pos] =~ tr/jcwn/cjnw/;
    $strings[$i] = join ('', @tmp);
    }
print "@strings\n";

[download]
Is there a compact one liner for: "Change string at pos (onePos) if pos (onePos) =~ /this/ and change pos (otherPos) if pos (otherPos) =~ /that/ "?

#!/usr/bin/perl -w
use strict;

my @strings = qw(johnny cash willie nelson);
my $pos = 0;

for my $i (0..$#strings) {
    substr($strings[$i],$pos,1) =~ tr/jcwn/cjnw/;
    }    
print "@strings\n";

[download]
This does it, but only one pos/tr at a time...
Let say you want to tr pos0 /jcwn/cjnw/ and pos 2 /xyz/abc/ within one tr.
Thanks

In reply to tr at a given pos by FFRANK

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