and sed https://pubs.opengroup.org/onlinepubs/9699919799/utilities/sed.html https://pubs.opengroup.org/onlinepubs/9699919799/utilities/s... and m4 https://pubs

and sed https://pubs.opengroup.org/onlinepubs/9699919799/utilities/sed.html https://pubs.opengroup.org/onlinepubs/9699919799/utilities/s... and m4 https://pubs.opengroup.org/onlinepubs/9699919799/utilities/m4.html https://pubs.opengroup.org/onlinepubs/9699919799/utilities/m... and ex https://pubs.opengroup.org/onlinepubs/9699919799/utilities/ex.html https://pubs.opengroup.org/onlinepubs/9699919799/utilities/e... and bc https://pubs.opengroup.org/onlinepubs/9699919799/utilities/bc.html https://pubs.opengroup.org/onlinepubs/9699919799/utilities/b... unix isn’t short of programming languages!