...new user and mount namespaces, and in that shell we create some new mounts: $ PS1='sh1# ' unshare -Urnm sh1# mount -t tmpfs tmpfs /etc # Mount empty tmpfs at /etc sh1# mount --b…Execution environment configuration NAME systemd.exec - Execution environment configuration SYNOPSIS service .service, socket .socket, mount .mount, swap .swap DESCRIPTION Unit con…