Install libphutil by entering the following commands in the terminal:
sudo apt update sudo apt install libphutil
Shared library for Arcanist and Phabricator
libphutil (pronounced as "lib-futile", like the English word futile) is principally the shared library for Arcanist and Phabricator, but is suitable for inclusion in other projects. In particular, some of the classes provided in this library improve the state of common operations in PHP, like executing system commands.