Section 1: user commands and tools
NAME systemd-path – List and query system and user paths SYNOPSIS systemd-path [OPTIONS…] [NAME…] DESCRIPTION systemd-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…
NAME systemd-nspawn – Spawn a namespace container for debugging, testing and building SYNOPSIS systemd-nspawn [OPTIONS…] [COMMAND [ARGS…]] systemd-nspawn -b [OPTIONS…] [ARGS…] DESCRIPTION systemd-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,…
NAME systemd-notify – Notify service manager about start-up completion and other daemon status changes SYNOPSIS systemd-notify [OPTIONS…][VARIABLE=VALUE…] DESCRIPTION systemd-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…
NAME 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… DESCRIPTION systemd-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…
NAME systemd-machine-id-setup – Initialize the machine ID in /etc/machine-id SYNOPSIS systemd-machine-id-setup DESCRIPTION systemd-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,…
NAME systemd-machine-id-commit – Commit transient machine ID to /etc/machine-id SYNOPSIS systemd-machine-id-commit DESCRIPTION systemd-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…
NAME loginctl, systemd-loginctl – Control the systemd login manager SYNOPSIS loginctl [OPTIONS…]{COMMAND}[NAME…] DESCRIPTION loginctl may be used to introspect and control the state of the systemd(1) login manager systemd-logind.service(8). OPTIONS The following options are understood: –help, -h Prints a short help text and exits. –version Prints a short version string and exits. –property=, -p When…
NAME journalctl, systemd-journalctl – Query the systemd journal SYNOPSIS journalctl [OPTIONS…][MATCH] DESCRIPTION journalctl 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…
NAME systemd-inhibit – Execute a program with an inhibition lock taken SYNOPSIS systemd-inhibit [OPTIONS…][COMMAND][ARGUMENTS…] systemd-inhibit [OPTIONS…] –list DESCRIPTION systemd-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…
NAME 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-id DESCRIPTION id128 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…
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…
NAME 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 DESCRIPTION systemd-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…
NAME systemd-escape – Escape strings for usage in systemd unit names SYNOPSIS systemd-escape [OPTIONS…] [STRING…] DESCRIPTION systemd-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…
NAME systemd-detect-virt – Detect execution in a virtualized environment SYNOPSIS systemd-detect-virt [OPTIONS…] DESCRIPTION systemd-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,…
NAME systemd-delta – Find overridden configuration files SYNOPSIS systemd-delta [OPTIONS…] [PREFIX[/SUFFIX]|SUFFIX…] DESCRIPTION systemd-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…
NAME systemd-cryptenroll – Enroll PKCS#11, FIDO2, TPM2 token/devices to LUKS2 encrypted volumes SYNOPSIS systemd-cryptenroll [OPTIONS…][DEVICE] DESCRIPTION systemd-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…
NAME systemd-coredumpctl – Retrieve coredumps from the journal SYNOPSIS systemd-coredumpctl [OPTIONS…] {COMMAND} [PID|COMM|EXE|MATCH…] DESCRIPTION systemd-coredumpctl may be used to retrieve coredumps from systemd-journald(8). OPTIONS The following options are understood: -h, –help Print a short help text and exit. –version Print a short version string and exit. -F, –field= Print all possible data values the specified…
NAME systemd-cgtop – Show top control groups by their resource usage SYNOPSIS systemd-cgtop [OPTIONS…] [GROUP] DESCRIPTION systemd-cgtop shows the top control groups of the local Linux control group hierarchy, ordered by their CPU, memory, or disk I/O load. The display is refreshed in regular intervals (by default every 1s), similar in style to top(1). If…
NAME systemd-cgls – Recursively show control group contents SYNOPSIS systemd-cgls [OPTIONS…] [CGROUP…] systemd-cgls [OPTIONS…] –unit|–user-unit [UNIT…] DESCRIPTION systemd-cgls recursively shows the contents of the selected Linux control group hierarchy in a tree. If arguments are specified, shows all member processes of the specified control groups plus all their subgroups and their members. The control groups…
NAME systemd-cat – Connect a pipeline or program’s output with the journal SYNOPSIS systemd-cat [OPTIONS…][COMMAND][ARGUMENTS…] systemd-cat [OPTIONS…] DESCRIPTION systemd-cat may be used to connect the standard input and output of a process to the journal, or as a filter tool in a shell pipeline to pass the output the previous pipeline element generates to the…