This handy cookbook teaches new-to-intermediate Linux users the essential skills necessary to manage a Linux system, using both graphical and command-line tools. Whether you run Linux in embedded, desktop, server, or cloud or virtual environments, the fundamental skills are the same. This book aims to get you up and running quickly, with copy-paste examples.Carla Schroder provides recipes that cover specific problems, with discussions that explain how each recipe works, as well as references for additional study.You'll learn how to:Use systemd, the new comprehensive service managerBuild simple or complex firewalls with firewalldSet up secure network connections for Linux systems and mobile devicesRescue nonbooting systemsReset lost passwords on Linux and WindowsUse dnsmasq to simplify managing your LAN name servicesManage users and groups and control access to filesProbe your computer hardware and monitor hardware healthManage the GRUB bootloader and multiboot Linux and WindowsKeep accurate time across your network with the newest toolsBuild an internet router/firewall on Raspberry PiManage filesystems and partitioning