Install cl-ppcre by entering the following commands in the terminal:
sudo apt update sudo apt install cl-ppcre
Description:
Portable Regular Express Library for Common Lisp
CL-PPCRE is a portable regular expression library for Common Lisp which has the following features: . * It is compatible with Perl. * It is fast. * It is portable.
Homepage: http://weitz.de/cl-ppcre/
Version: 2.0.3-1
Section: universe/devel