systemctl(1) — The manual page for the systemctl command line utility provides a complete list of supported options and commands.

systemd(1) — The manual page for the systemd system and service manager provides more information about its concepts and documents available command line options and environment variables, supported configuration files and directories, recognized signals, and available kernel options.

systemd-delta(1) — The manual page for the systemd-delta utility that allows to find extended and overridden configuration files.

systemd.unit(5) — The manual page named systemd.unit provides detailed information about systemd unit files and documents all available configuration options.

systemd.service(5) — The manual page named systemd.service documents the format of service unit files.

systemd.target(5) — The manual page named systemd.target documents the format of target unit files.

systemd.kill(5) — The manual page named systemd.kill documents the configuration of the process killing procedure.

Red Hat Enterprise Linux 7 Networking Guide — The Networking Guide for Red Hat Enterprise Linux 7 documents relevant information regarding the configuration and administration of network interfaces, networks, and network services in this system. It provides an introduction to the hostnamectl utility, explains how to use it to view and set host names on the command line, both locally and remotely, and provides important information about the selection of host names and domain names.

Red Hat Enterprise Linux 7 Desktop Migration and Administration Guide — The Desktop Migration and Administration Guide for Red Hat Enterprise Linux 7 documents the migration planning, deployment, configuration, and administration of the GNOME 3 desktop on this system. It introduces the logind service, enumerates its most significant features, and explains how to use the loginctl utility to list active sessions and enable multi-seat support.

Red Hat Enterprise Linux 7 SELinux User's and Administrator's Guide — The SELinux User's and Administrator's Guide for Red Hat Enterprise Linux 7 describes the basic principles of SELinux and documents in detail how to configure and use SELinux with various services such as the Apache HTTP Server, Postfix, PostgreSQL, or OpenShift. It explains how to configure SELinux access permissions for system services managed by systemd.

Red Hat Enterprise Linux 7 Installation Guide — The Installation Guide for Red Hat Enterprise Linux 7 documents how to install the system on AMD64 and Intel 64 systems, 64-bit IBM Power Systems servers, and IBM Z. It also covers advanced installation methods such as Kickstart installations, PXE installations, and installations over the VNC protocol. In addition, it describes common post-installation tasks and explains how to troubleshoot installation problems, including detailed instructions on how to boot into rescue mode or recover the root password.

Red Hat Enterprise Linux 7 Security Guide — The Security Guide for Red Hat Enterprise Linux 7 assists users and administrators in learning the processes and practices of securing their workstations and servers against local and remote intrusion, exploitation, and malicious activity. It also explains how to secure critical system services.

systemd Home Page — The project home page provides more information about systemd.

Chapter 2, System Locale and Keyboard Configuration documents how to manage the system locale and keyboard layouts. It explains how to use the localectl utility to view the current locale, list available locales, and set the system locale on the command line, as well as to view the current keyboard layout, list available keymaps, and enable a particular keyboard layout on the command line.

Chapter 3, Configuring the Date and Time documents how to manage the system date and time. It explains the difference between a real-time clock and system clock and describes how to use the timedatectl utility to display the current settings of the system clock, configure the date and time, change the time zone, and synchronize the system clock with a remote server.

Chapter 6, Gaining Privileges documents how to gain administrative privileges by using the su and sudo commands.

Chapter 12, OpenSSH describes how to configure an SSH server and how to use the ssh, scp, and sftp client utilities to access it.

Chapter 22, Viewing and Managing Log Files provides an introduction to journald. It describes the journal, introduces the journald service, and documents how to use the journalctl utility to view log entries, enter live view mode, and filter log entries. In addition, this chapter describes how to give non-root users access to system logs and enable persistent storage for log files.