#!/usr/bin/perl $string = "Apple Ball Cat Dog"; $string =~ s/ /-/gc; print "$string\n";# For Perl (language) only # syntax (NOTE: this overwrites your original string) <variable> =~ s/<substring-to-replace>/<replacing-substring>/g; # example: replacing all the 'r' characters with 'l' $YourVar =~ s/r/l/g; # usable example my $YourVar = "strawberry"; $YourVar =~ s/r/l/g; print $YourVar; print "\n";#!/usr/bin/perl $string = "The cat sat on the mat"; $string =~ s/cat/dog/gc; print "$string\n";