The Linux Manuals (man pages) document is an important part of Linux documents. Linux Manuals are organized as several sections. Each section has a group of commands for a specific area in Linux usage, administration or development.
systemctl, systemd-systemctl – Control the systemd system and service manager Synopsis systemctl [OPTIONS…]{COMMAND}[NAME…]Descriptionsystemctl may be used to introspect and control the state of the systemd(1) system and service manager. OptionsThe following options are understood: –help, -h Prints a short help text and exits. –version Prints a short version string and exits. –type=, -t The argument…
systemd-socket-activate – Test socket activation of daemons Synopsis systemd-socket-activate [OPTIONS…] daemon [OPTIONS…]Descriptionsystemd-socket-activate may be used to launch a socket-activated service program from the command line for testing purposes. It may also be used to launch individual instances of the service program per connection. The daemon to launch and its options should be specified after options…
systemd-run – Run programs in transient scope units, service units, or path-, socket-, or timer-triggered service units Synopsis systemd-run [OPTIONS…] COMMAND [ARGS…] systemd-run [OPTIONS…] [PATH OPTIONS…] {COMMAND} [ARGS…] systemd-run [OPTIONS…] [SOCKET OPTIONS…] {COMMAND} [ARGS…] systemd-run [OPTIONS…] [TIMER OPTIONS…] {COMMAND} [ARGS…]Descriptionsystemd-run may be used to create and start a transient .service or .scope unit and run the…
resolvectl, resolvconf, systemd-resolve – Resolve domain names, IPV4 and IPv6 addresses, DNS resource records, and services; introspect and reconfigure the DNS resolver Synopsis resolvectl [OPTIONS…] {COMMAND} [NAME…]Descriptionresolvectl may be used to resolve domain names, IPv4 and IPv6 addresses, DNS resource records and services with the systemd-resolved.service(8) resolver service. By default, the specified list of parameters…
systemd-path – List and query system and user paths Synopsis systemd-path [OPTIONS…] [NAME…]Descriptionsystemd-path may be used to query system and user paths. The tool makes many of the paths described in file-hierarchy(7) available for querying. When invoked without arguments, a list of known paths and their current values is shown. When at least one argument…
systemd-nspawn – Spawn a namespace container for debugging, testing and building Synopsis systemd-nspawn [OPTIONS…] [COMMAND [ARGS…]] systemd-nspawn -b [OPTIONS…] [ARGS…]Descriptionsystemd-nspawn may be used to run a command or OS in a light-weight namespace container. In many ways it is similar to chroot(1), but more powerful since it fully virtualizes the file system hierarchy, as well as…
systemd-notify – Notify service manager about start-up completion and other daemon status changes Synopsis systemd-notify [OPTIONS…][VARIABLE=VALUE…]Descriptionsystemd-notify may be called by daemon scripts to notify the init system about status changes. It can be used to send arbitrary information, encoded in an environment-block-like list of strings. Most importantly, it can be used for start-up completion notification….
systemd-mount, systemd-umount – Establish and destroy transient mount or auto-mount points Synopsis systemd-mount [OPTIONS…] WHAT [WHERE] systemd-mount [OPTIONS…] –list systemd-mount [OPTIONS…] –umount WHAT|WHERE…Descriptionsystemd-mount may be used to create and start a transient .mount or .automount unit of the file system WHAT on the mount point WHERE. In many ways, systemd-mount is similar to the lower-level…
systemd-machine-id-setup – Initialize the machine ID in /etc/machine-id Synopsis systemd-machine-id-setupDescriptionsystemd-machine-id-setup may be used by system installer tools to initialize the machine ID stored in /etc/machine-id at install time, with a provisioned or randomly generated ID. See machine-id(5) for more information about this file. If the tool is invoked without the –commit switch, /etc/machine-id is initialized…
systemd-machine-id-commit – Commit transient machine ID to /etc/machine-id Synopsis systemd-machine-id-commitDescriptionsystemd-machine-id-commit may be used to write on disk any transient machine ID mounted as a temporary file system in /etc/machine-id at boot time. See machine-id(5) for more information about this file. This tool will execute no operation if /etc/machine-id doesn’t contain any valid machine ID, isn’t…
loginctl, systemd-loginctl – Control the systemd login manager Synopsis loginctl [OPTIONS…]{COMMAND}[NAME…]Descriptionloginctl may be used to introspect and control the state of the systemd(1) login manager systemd-logind.service(8). OptionsThe following options are understood: –help, -h Prints a short help text and exits. –version Prints a short version string and exits. –property=, -p When showing session/user/ properties, limit…
journalctl, systemd-journalctl – Query the systemd journal Synopsis journalctl [OPTIONS…][MATCH]Descriptionjournalctl may be used to query the contents of the systemd(1) journal as written by systemd-journald.service(8). If called without parameter will show the full contents of the journal, starting with the oldest entry collected. If a match argument is passed the output is filtered accordingly. A…
systemd-inhibit – Execute a program with an inhibition lock taken Synopsis systemd-inhibit [OPTIONS…][COMMAND][ARGUMENTS…] systemd-inhibit [OPTIONS…] –listDescriptionsystemd-inhibit may be used to execute a program with a shutdown, sleep, or idle inhibitor lock taken. The lock will be acquired before the specified command line is executed and released afterwards. Inhibitor locks may be used to block or…
systemd-id128 – Generate and print sd-128 identifiers Synopsis systemd-id128 [OPTIONS…] new systemd-id128 [OPTIONS…] machine-id systemd-id128 [OPTIONS…] boot-id systemd-id128 [OPTIONS…] invocation-idDescriptionid128 may be used to conveniently print sd-id128(3) UUIDs. What identifier is printed depends on the specific verb. With new, a new random identifier will be generated. With machine-id, the identifier of the current machine will…
systemd-firstboot, systemd-firstboot.service – Initialize basic system settings on or before the first boot-up of a system Synopsis systemd-firstboot [OPTIONS…]systemd-firstboot.service Descriptionsystemd-firstboot initializes the most basic system settings interactively on the first boot, or optionally non-interactively when a system image is created. The following settings may be set up: • The system locale, more specifically the two…
systemd-firstboot, systemd-firstboot.service – Initialize basic system settings on or before the first boot-up of a system Synopsis systemd-firstboot [OPTIONS…]systemd-firstboot.service Descriptionsystemd-firstboot initializes the most basic system settings interactively on the first boot, or optionally non-interactively when a system image is created. The following settings may be set up: • The system locale, more specifically the two…
systemd-escape – Escape strings for usage in systemd unit names Synopsis systemd-escape [OPTIONS…] [STRING…]Descriptionsystemd-escape may be used to escape strings for inclusion in systemd unit names. The command may be used to escape and to undo escaping of strings. The command takes any number of strings on the command line, and will process them individually,…
systemd-detect-virt – Detect execution in a virtualized environment Synopsis systemd-detect-virt [OPTIONS…]Descriptionsystemd-detect-virt detects execution in a virtualized environment. It identifies the virtualization technology and can distinguish full machine virtualization from container virtualization. systemd-detect-virt exits with a return value of 0 (success) if a virtualization technology is detected, and non-zero (error) otherwise. By default, any type of…
systemd-delta – Find overridden configuration files Synopsis systemd-delta [OPTIONS…] [PREFIX[/SUFFIX]|SUFFIX…]Descriptionsystemd-delta may be used to identify and compare configuration files that override other configuration files. Files in /etc/ have highest priority, files in /run/ have the second highest priority, …, files in /usr/lib/ have lowest priority. Files in a directory with higher priority override files with…
systemd-cryptenroll – Enroll PKCS#11, FIDO2, TPM2 token/devices to LUKS2 encrypted volumes Synopsis systemd-cryptenroll [OPTIONS…][DEVICE]Descriptionsystemd-cryptenroll is a tool for enrolling hardware security tokens and devices into a LUKS2 encrypted volume, which may then be used to unlock the volume during boot. Specifically, it supports tokens and credentials of the following kind to be enrolled: 1. PKCS#11…