| Author | Lennart Poettering, Kay Sievers, |
| Harald Hoyer, Daniel Mack, | |
| Tom Gundersen, David Herrmann | |
| Contibutors | |
| Released | 2010 |
| Source | systemd.git |
| Homepage |
|---|
systemd is a system and service manager for Linux, compatible with SysV and
LSB init scripts. systemd provides aggressive parallelization capabilities, uses
socket and D-Bus activation for starting services, offers on-demand starting of
daemons, keeps track of processes using Linux cgroups, supports snapshotting and
restoring of the system state, maintains mount and automount points and
implements an elaborate transactional dependency-based service control logic.
| Package | RPM | DEB |
|---|---|---|
| systemd | + | |
| systemd-udev | + |
| Library | RPM | DEB |
|---|---|---|
| ld-linux-x86-64 | ||
| libacl | ||
| libaudit | ||
| libblkid | ||
| libcap | ||
| libcrypt | ||
| libc | ||
| libgcc_s | ||
| libgcrypt | ||
| libgpg-error | ||
| libkmod | ||
| liblz4 | ||
| liblzma | ||
| libmount | ||
| libm | ||
| libpam | ||
| libpthread | ||
| libqrencode | ||
| librt | ||
| libseccomp | ||
| libselinux |
| CMD | MAN | DESCRIPTION |
| bootctl | (1) | Control the firmware and boot manager settings |
| busctl | (1) | Introspect the bus |
| coredumpctl | (1) | Retrieve coredumps from the journal |
| hostnamectl | (1) | Control the system hostname |
| journalctl | (1) | Query the systemd journal |
| kernel-install | (8) | Add and remove kernel and initramfs images to and from... |
| localectl | (1) | Control the system locale and keyboard layout settings |
| loginctl | (1) | Control the systemd login manager |
| networkctl | (1) | Query the status of network links |
| systemctl | (1) | Control the systemd system and service manager |
| systemd-analyze | (1) | Analyze system boot-up performance |
| systemd-ask-password | (1) | Query the user for a system password |
| systemd-cat | (1) | Connect a pipeline or program's output with the journal |
| systemd-cgls | (1) | Recursively show control group contents |
| systemd-cgtop | (1) | Show top control groups by their resource usage |
| systemd-delta | (1) | Find overridden configuration files |
| systemd-detect-virt | (1) | Detect execution in a virtualized environment |
| systemd-escape | (1) | Escape strings for usage in system unit names |
| systemd-firstboot | (1) | Initialize basic system settings on or before the fir... |
| systemd-inhibit | (1) | Execute a program with an inhibition lock taken |
| systemd-machine-id-setup | (1) | Initialize the machine ID in /etc/machine-id |
| systemd-notify | (1) | Notify service manager about start-up completion and o... |
| systemd-path | (1) | List and query system and user paths |
| systemd-resolve | (1) | Resolve domain names, IPV4 and IPv6 addresses, DNS res... |
| systemd-run | (1) | Run programs in transient scope or service or timer units |
| systemd-sysusers | (8) | Allocate system users and groups |
| systemd-tmpfiles | (8) | Creates, deletes and cleans up volatile and temporary ... |
| systemd-tty-ask-password-agent | (1) | List or process pending systemd password... |
| timedatectl | (1) | Control the system time and date |
| halt | (8) | Halt, power-off or reboot the machine |
| init | (1) | systemd system and service manager |
| poweroff | (8) | Halt, power-off or reboot the machine |
| reboot | (8) | Halt, power-off or reboot the machine |
| reboot | (2) | reboot or enable/disable Ctrl-Alt-Del |
| runlevel | (8) | Print previous and current SysV runlevel |
| shutdown | (8) | Halt, power-off or reboot the machine |
| shutdown | (2) | shut down part of a full-duplex connection |
| shutdown | (3p) | shut down socket send and receive operations |
| telinit | (8) | Change SysV runlevel |
| CMD | MAN | DESCRIPTION |
| systemd-hwdb | (8) | hardware database management tool |
| udevadm | (8) | udev management tool |
| udevadm | (8) | udev management tool |
dumb full log history of a SERVICE as JSON file:
~# journalctl --output=json --no-pager -u SERVICE > SERVICE_dump.json
Send control commands or test the device manager
| OPT | TYPE | ++V | –V | DESC |
|---|---|---|---|---|
info | Query sysfs or the udev database | |||
trigger | Request events from the kernel | |||
settle | Wait for pending udev events | |||
control | Control the udev daemon | |||
monitor | Listen to kernel and udev events | |||
test | Test an event run | |||
test-builtin | Test a built-in command |
update/reload udev rules without system reboot:
~# udevadm control --reload-rules && udevvadm trigger
get full udev attribute list for a DEVICE:
~# udevadm info -a -p $(udevadm info -q path -n /dev/DEVICE)
testing rules before loading:
~# udevadm test $(udevadm info -q path -n DEVICE)
- Writing udev rules http://www.reactivated.net/writing_udev_rules.html