Question

Is there a regular expression in Perl to find a file’s extension? For example, if I have “test.exe“, how would I get the “.exe“?

Answer 1

my $file = "test.exe";

# Match a dot, followed by any number of non-dots until the
# end of the line.
my ($ext) = $file =~ /(\.[^.]+)$/;

print "$ext\n";