SYSTEMD-RUN(1)

systemd-run

SYSTEMD-RUN(1)

NAME¶

systemd-run - Run programs in transient scope or service or timer units

SYNOPSIS¶

systemd-run [OPTIONS...] COMMAND [ARGS...]

systemd-run [OPTIONS...] [TIMER OPTIONS...] {COMMAND} [ARGS...]

DESCRIPTION¶

systemd-run may be used to create and start a transient .service or a transient .timer or a .scope unit and run the specified COMMAND in it.

If a command is run as transient service unit, it will be started and managed by the service manager like any other service, and thus show up in the output of systemctl list-units like any other unit. It will run in a clean and detached execution environment. systemd-run will start the service asynchronously in the background and immediately return.

If a command is run with timer options, transient timer unit also be created with transient service unit. But the transient timer unit is only started immediately. The transient service unit will be started when the transient timer is elapsed. If --unit= is specified with timer options, the COMMAND can be omitted. In this case, systemd-run assumes service unit is already loaded and creates transient timer unit only. To successfully create timer unit, already loaded service unit should be specified with --unit=. This transient timer unit can activate the existing service unit like any other timer.

If a command is run as transient scope unit, it will be started directly by systemd-run and thus inherit the execution environment of the caller. It is however managed by the service manager similar to normal services, and will also show up in the output of systemctl list-units. Execution in this case is synchronous, and execution will return only when the command finishes.

OPTIONS¶

The following options are understood:

--scope

Create a transient .scope unit instead of the default transient .service unit.

--unit=

Use this unit name instead of an automatically generated one.

--property=, -p

Sets a unit property for the scope or service unit that is created. This takes an assignment in the same format as systemctl(1)'s set-property command.

--description=

Provide a description for the service or scope unit. If not specified, the command itself will be used as a description. See Description= in systemd.unit(5).

--slice=

Make the new .service or .scope unit part of the specified slice, instead of the system.slice.

--remain-after-exit

After the service or scope process has terminated, keep the service around until it is explicitly stopped. This is useful to collect runtime information about the service after it finished running. Also see RemainAfterExit= in systemd.service(5).

--send-sighup

When terminating the scope or service unit, send a SIGHUP immediately after SIGTERM. This is useful to indicate to shells and shell-like processes that the connection has been severed. Also see SendSIGHUP= in systemd.kill(5).

--service-type=

Sets the service type. Also see Type= in systemd.service(5). This option has no effect in conjunction with --scope. Defaults to simple.

--uid=, --gid=

Runs the service process under the UNIX user and group. Also see User= and Group= in systemd.exec(5).

--nice=

Runs the service process with the specified nice level. Also see Nice= in systemd.exec(5).

--setenv=

Runs the service process with the specified environment variables set. Also see Environment= in systemd.exec(5).

--pty, -t

When invoking a command as service connects its standard input and output to the invoking tty via a pseudo TTY device. This allows invoking binaries as services that expect interactive user input, such as interactive command shells.

--quiet, -q

Suppresses additional informational output while running. This is particularly useful in combination with --pty when it will suppress the initial message explaining how to terminate the TTY connection.

--on-active=, --on-boot=, --on-startup=, --on-unit-active=, --on-unit-inactive=

Defines monotonic timers relative to different starting points. Also see OnActiveSec=, OnBootSec=, OnStartupSec=, OnUnitActiveSec= and OnUnitInactiveSec= in systemd.timer(5). This options have no effect in conjunction with --scope.

--on-calendar=

Defines realtime (i.e. wallclock) timers with calendar event expressions. Also see OnCalendar= in systemd.timer(5). This option has no effect in conjunction with --scope.

--timer-property=

Sets a timer unit property for the timer unit that is created. It is similar with --property but only for created timer unit. This option only has effect in conjunction with --on-active=, --on-boot=, --on-startup=, --on-unit-active=, --on-unit-inactive=, --on-calendar=. This takes an assignment in the same format as systemctl(1)'s set-property command.

-G, --collect

Unload the transient unit after it completed, even if it failed. Normally, without this option, all units that ran and failed are kept in memory until the user explicitly resets their failure state with systemctl reset-failed or an equivalent command. On the other hand, units that ran successfully are unloaded immediately. If this option is turned on the "garbage collection" of units is more aggressive, and unloads units regardless if they exited successfully or failed. This option is a shortcut for --property=CollectMode=inactive-or-failed, see the explanation for CollectMode= in systemd.unit(5) for further information.

--system

Talk to the service manager of the system. This is the implied default.

-H, --host=

Execute the operation remotely. Specify a hostname, or a username and hostname separated by "@", to connect to. The hostname may optionally be suffixed by a container name, separated by ":", which connects directly to a specific container on the specified host. This will use SSH to talk to the remote machine manager instance. Container names may be enumerated with machinectl -H HOST.

-M, --machine=

Execute operation on a local container. Specify a container name to connect to.

-h, --help

Print a short help text and exit.

--version

Print a short version string and exit.

All command line arguments after the first non-option argument become part of the command line of the launched process. If a command is run as service unit, its first argument needs to be an absolute binary path.

EXIT STATUS¶

On success, 0 is returned, a non-zero failure code otherwise.

EXAMPLES¶

The following command will log the environment variables provided by systemd to services:

# systemd-run env
Running as unit run-19945.service.
# journalctl -u run-19945.service
Sep 08 07:37:21 bupkis systemd[1]: Starting /usr/bin/env...
Sep 08 07:37:21 bupkis systemd[1]: Started /usr/bin/env.
Sep 08 07:37:21 bupkis env[19948]: PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin
Sep 08 07:37:21 bupkis env[19948]: LANG=en_US.UTF-8
Sep 08 07:37:21 bupkis env[19948]: BOOT_IMAGE=/vmlinuz-3.11.0-0.rc5.git6.2.fc20.x86_64

The following command invokes the updatedb(8) tool, but lowers the block IO weight for it to 10. See systemd.resource-control(5) for more information on the BlockIOWeight= property.

# systemd-run -p BlockIOWeight=10 updatedb

The following command will touch a file after 30 seconds.

# date; systemd-run --on-active=30 --timer-property=AccuracySec=100ms /bin/touch /tmp/foo
Mon Dec  8 20:44:24 KST 2014
Running as unit run-71.timer.
Will run as unit run-71.service.
# journalctl -b -u run-73.timer
-- Logs begin at Fri 2014-12-05 19:09:21 KST, end at Mon 2014-12-08 20:44:54 KST. --
Dec 08 20:44:38 container systemd[1]: Starting /bin/touch /tmp/foo.
Dec 08 20:44:38 container systemd[1]: Started /bin/touch /tmp/foo.
# journalctl -b -u run-73.service
-- Logs begin at Fri 2014-12-05 19:09:21 KST, end at Mon 2014-12-08 20:44:54 KST. --
Dec 08 20:44:48 container systemd[1]: Starting /bin/touch /tmp/foo...
Dec 08 20:44:48 container systemd[1]: Started /bin/touch /tmp/foo.

The following command invokes /bin/bash as a service passing its standard input, output and error to the calling TTY.

# systemd-run -t /bin/bash

Source file:	systemd-run.1.en.gz (from systemd 219-78.el7_9.7)
Source last updated:	2022-08-16 16:06:04
Converted to HTML:	2023-06-08 08:52:52