Here is a sort version of Jenda's solution 
my @files = qw(model4run1 model2run1 model4run2 model1run1);
my $same = $files[0];
$same &=$_ for @files;
($same) = split 0x00, $same,2;
print "Prefix is \"$same\"\n";

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In reply to Re: Re: Find common prefix from a list of strings by fletcher_the_dog
in thread Find common prefix from a list of strings by Albannach

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