Install libshell-guess-perl by entering the following commands in the terminal:
sudo apt update sudo apt install libshell-guess-perl
Description:
Perl module to make an educated guess about the shell in use
Shell::Guess makes a reasonably aggressive attempt to determine the shell being employed by the user, either the shell that executed the perl script directly (the "running" shell), or the users' login shell (the "login" shell). It does this by a variety of means available to it, depending on the platform that it is running on.
Homepage: https://metacpan.org/release/Shell-Guess
Version: 0.08-1
Section: universe/perl