8.76.2. Contents of systemd
Short Descriptions
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 after the kernel has initialized the hardware; init takes over the boot process and starts the processes specified by 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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Controls the systemd Out Of Memory daemon |
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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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Reports whether the system is connected to an external power source. |
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Is used to analyze system startup performance, 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 message specified on the Linux 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 loads |
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Displays and processes credentials |
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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 (UUID) 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 of status changes |
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Is used to run a command, or an entire 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 with 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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Activates system extension images |
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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 |