8.69.2. Contents of systemd
Short Descriptions
Is used to query the firmware and boot manager settings |
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Is used to introspect and monitor the D-Bus bus |
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Is used to retrieve coredumps from the systemd journal |
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Normally invokes shutdown with the
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Is used to query and change the system hostname and related settings |
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Is the first process to be started when the kernel has initialized the hardware which takes over the boot process and starts all processes according to its configuration files. In this case, it starts systemd |
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Is used to query the contents of the systemd journal |
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Is used to add and remove kernel and initramfs images to and from /boot. In LFS, this is done manually |
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Is used to query and change the system locale and keyboard layout settings |
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Is used to introspect and control the state of the systemd Login Manager |
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Is used to introspect and control the state of the systemd Virtual Machine and Container Registration Manager |
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Is used to introspect and configure the state of the network links configured by systemd-networkd |
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Is used to attach or detach portable services from the local system |
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Instructs the kernel to halt the system and switch off the computer (see halt) |
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Instructs the kernel to reboot the system (see halt) |
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Registers DNS server and domain configuration with systemd-resolved |
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Sends control commands to the network name resolution manager, or resolves domain names, IPv4 and IPv6 addresses, DNS records, and services |
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Outputs the previous and the current run-level, as noted
in the last run-level record in |
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Brings the system down in a safe and secure manner, signaling all processes and notifying all logged-in users |
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Is used to introspect and control the state of the systemd system and service manager |
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Is used to determine system startup performance of the current boot, as well as identify troublesome systemd units |
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Is used to query a system password or passphrase from the user, using a question message specified on the command line |
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Is used to connect the STDOUT and STDERR outputs of a process with the systemd journal |
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Recursively shows the contents of the selected Linux control group hierarchy in a tree |
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Shows the top control groups of the local Linux control group hierarchy, ordered by their CPU, memory and disk I/O load |
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Is used to identify and compare configuration files in
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Detects whether the system is being run in a virtual environment, and adjusts udev accordingly |
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Is used to inspect OS disk images |
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Is used to escape strings for inclusion in systemd unit names |
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Is used to manage the hardware database (hwdb) |
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Generates and prints id128 strings |
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Is used to execute a program with a shutdown, sleep or idle inhibitor lock taken, preventing an action such as a system shutdown until the process is completed |
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Is used by system installer tools to initialize the
machine ID stored in |
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Is used to temporarily mount or automount disks |
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Is used by daemon scripts to notify the init system about status changes |
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Is used to run a command or OS in a light-weight namespace container |
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Is used to query system and user paths |
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Is used to grow and add partitions to a partition table when systemd is used in an OS image (e.g. a container) |
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Is used to resolve domain names, IPV4 and IPv6 addresses, DNS resource records, and services |
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Is used to create and start a transient .service or a .scope unit and run the specified command in it. This is useful for validating systemd units |
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Is used to listen on socket devices and launch a process upon a successful connection to the socket |
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Creates, deletes and cleans up volatile and temporary
files and directories, based on the configuration file
format and location specified in |
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Unmounts mount points |
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Is used to list and/or process pending systemd password requests |
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Tells init which run-level to change to |
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Is used to query and change the system clock and its settings |
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Is a generic udev administration tool which controls the udevd daemon, provides info from the Udev hardware database, monitors uevents, waits for uevents to finish, tests udev configuration, and triggers uevents for a given device |
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Is the main systemd utility library |
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Is a library to access Udev device information |