Let's say you have the following Perl script which prompts a user for input.
#!/usr/bin/perl use strict; use warnings; print "password: "; my $password = <STDIN>; chomp $password;
Running this script will produce the prompt. Let's say the use enters a value that contains the dollar sign $ character.
~]# perl example.pl password: its$secret
At this point, the $password variable will contain the dollar sign character. For example, here is how you can output the value of the $password variable.
print "password = $password \n";
Which should output the following.
password = its$secret
Here is how you could update the $password variable so that the dollar sign character is escaped.
$password = s|\$|\\\$|g;