I've written some code in Perl which executes some bash command within its execution. My problem was when bash command attributes contained white space inside which failed bash command execution. But I've managed to work with those argument simply adding quotes around argument. Unfortunately during tests I've found that my script fails when
my $arg1 = 'This is sample text which can be put into variable. And a random sign\\';
It's much easier to use single quotes in bash; then the only character you need to worry about is a single quote itself.
($arbitrary_string) =~ s/'/'"'"'/g; `echo '$arbitrary_string'`