X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=man%2Fsystemctl.xml;h=4a7abab8a4b1203fc6f5d35c9305a13ad479b650;hb=5607d856b8606ba75446a07ab5e9048753e1d7a6;hp=77447dd122bdc17ceaaf72ae8fa93136c0f597d7;hpb=9029f64298cb70c12ecf638fddee7f41b056fcf1;p=elogind.git
diff --git a/man/systemctl.xml b/man/systemctl.xml
index 77447dd12..4a7abab8a 100644
--- a/man/systemctl.xml
+++ b/man/systemctl.xml
@@ -1,4 +1,4 @@
-
+
@@ -60,10 +60,12 @@ along with systemd; If not, see .
Description
- systemctl may be used to
- introspect and control the state of the
+ systemctl may be used to introspect and
+ control the state of the systemd system and
+ service manager. Please refer to
systemd1
- system and service manager.
+ for an introduction into the basic concepts and functionality this
+ tool manages.
@@ -96,9 +98,10 @@ along with systemd; If not, see .
- The argument should be a comma-separated list of unit LOAD,
- SUB, or ACTIVE states. When listing units, show only those
- in specified states.
+ The argument should be a comma-separated list of unit
+ LOAD, SUB, or ACTIVE states. When listing units, show only
+ those in specified states. Use
+ to show only failed units.
@@ -148,9 +151,12 @@ along with systemd; If not, see .
Show reverse dependencies between units with
- list-dependencies, i.e. units with
- dependencies of type Wants= or
- Requires= on the given unit.
+ list-dependencies, i.e. follow
+ dependencies of type WantedBy=,
+ RequiredBy=,
+ RequiredByOverrridable=,
+ PartOf=, BoundBy=,
+ instead of Wants= and similar.
@@ -161,10 +167,20 @@ along with systemd; If not, see .
With list-dependencies, show the
units that are ordered before the specified unit. In other
- words, list the units that are in the After=
- directive of the specified unit, have the specified unit in
- their Before= directive, or are otherwise
- implicit dependencies of the specified unit.
+ words, recursively list units following the
+ After= dependency.
+
+ Note that any After= dependency is
+ automatically mirrored to create a
+ Before= dependency. Temporal dependencies
+ may be specified explictly, but are also created implicitly
+ for units which are WantedBy= targets
+ (see
+ systemd.target5),
+ and as a result of other directives (for example
+ RequiresMountsFor=). Both explicitly
+ and implicitly introduced dependencies are shown with
+ list-dependencies.
@@ -174,10 +190,8 @@ along with systemd; If not, see .
With list-dependencies, show the
units that are ordered after the specified unit. In other
- words, list the units that are in the Before=
- directive of the specified unit, have the specified unit in
- their After= directive, or otherwise depend
- on the specified unit.
+ words, recursively list units following the
+ Before= dependency.
@@ -230,8 +244,10 @@ along with systemd; If not, see .
If replace-irreversibly is specified,
operate like replace, but also mark the new
jobs as irreversible. This prevents future conflicting
- transactions from replacing these jobs. The jobs can still be
- cancelled using the cancel command.
+ transactions from replacing these jobs (or even being enqueued
+ while the irreversible jobs are still pending). Irreversible
+ jobs can still be cancelled using the cancel
+ command.
isolate is only valid for start
operations and causes all other units to be stopped when the
@@ -286,6 +302,8 @@ along with systemd; If not, see .
snapshot,
is-active,
is-failed,
+ is-enabled,
+ is-system-running,
enable and
disable.
@@ -315,6 +333,11 @@ along with systemd; If not, see .
+
+
@@ -371,11 +394,36 @@ along with systemd; If not, see .
When used with kill, choose which
- processes to kill. Must be one of ,
- or to select
- whether to kill only the main process of the unit, the
- control process or all processes of the unit. If omitted,
- defaults to .
+ processes to send a signal to. Must be one of
+ , or
+ to select whether to kill only the main
+ process, the control process or all processes of the
+ unit. The main process of the unit is the one that defines
+ the life-time of it. A control process of a unit is one that
+ is invoked by the manager to induce state changes of it. For
+ example, all processes started due to the
+ ExecStartPre=,
+ ExecStop= or
+ ExecReload= settings of service units are
+ control processes. Note that there is only one control
+ process per unit at a time, as only one state change is
+ executed at a time. For services of type
+ Type=forking, the initial process started
+ by the manager for ExecStart= is a
+ control process, while the process ultimately forked off by
+ that one is then considered the main process of the unit (if
+ it can be determined). This is different for service units
+ of other types, where the process forked off by the manager
+ for ExecStart= is always the main process
+ itself. A service unit consists of zero or one main process,
+ zero or one control process plus any number of additional
+ processes. Not all unit types manage processes of these
+ types however. For example, for mount units, control processes
+ are defined (which are the invocations of
+ /usr/bin/mount and
+ /usr/bin/umount), but no main process
+ is defined. If omitted, defaults to
+ .
@@ -410,7 +458,7 @@ along with systemd; If not, see .
safe option to request an immediate reboot. If
is specified twice for these
operations, they will be executed immediately without
- terminating any processes or umounting any file
+ terminating any processes or unmounting any file
systems. Warning: specifying twice
with any of these operations might result in data
loss.
@@ -449,6 +497,20 @@ along with systemd; If not, see .
+
+
+
+
+ Takes one of full (the default),
+ enable-only,
+ disable-only. When used with the
+ preset or preset-all
+ commands, controls whether units shall be disabled and
+ enabled according to the preset rules, or only enabled, or
+ only disabled.
+
+
+
@@ -535,7 +597,7 @@ kobject-uevent 1 systemd-udevd-kernel.socket systemd-udevd.service
See also the options ,
- , and .
+ , and .
@@ -549,7 +611,7 @@ kobject-uevent 1 systemd-udevd-kernel.socket systemd-udevd.service
See also the options and
- .
+ .
@@ -594,8 +656,7 @@ kobject-uevent 1 systemd-udevd-kernel.socket systemd-udevd.service
file.
This command should not be confused with the
- daemon-reload or load
- commands.
+ daemon-reload command.
@@ -664,9 +725,8 @@ kobject-uevent 1 systemd-udevd-kernel.socket systemd-udevd.service
Send a signal to one or more processes of the
unit. Use to select which
- process to kill. Use to select
- the kill mode and to select the
- signal to send.
+ process to kill. Use to select
+ the signal to send.
@@ -700,7 +760,7 @@ kobject-uevent 1 systemd-udevd-kernel.socket systemd-udevd.service
Show terse runtime status information about one or
more units, followed by most recent log data from the
journal. If no units are specified, show system status. If
- combined with also shows status of
+ combined with , also show the status of
all units (subject to limitations specified with
). If a PID is passed, show information
about the unit the process belongs to.
@@ -799,15 +859,30 @@ kobject-uevent 1 systemd-udevd-kernel.socket systemd-udevd.service
- list-dependencies NAME
+
+ list-dependencies
+ NAME
+
- Shows required and wanted units of the specified
- unit. If no unit is specified,
- default.target is implied. Target units
- are recursively expanded. When is
- passed, all other units are recursively expanded as
- well.
+ Shows units required and wanted by the specified
+ unit. This recursively lists units following the
+ Requires=,
+ RequiresOverridable=,
+ Requisite=,
+ RequisiteOverridable=,
+ Wants=, BindsTo=
+ dependencies. If no unit is specified,
+ default.target is implied.
+
+ By default, only target units are recursively
+ expanded. When is passed, all other
+ units are recursively expanded as well.
+
+ Options ,
+ ,
+ may be used to change what types of dependencies
+ are shown.
@@ -881,6 +956,9 @@ kobject-uevent 1 systemd-udevd-kernel.socket systemd-udevd.service
the system, or for all future logins of all users, or only this
boot. Note that in the last case, no systemd daemon
configuration is reloaded.
+
+ Using enable on masked units
+ results in an error.
@@ -939,7 +1017,7 @@ kobject-uevent 1 systemd-udevd-kernel.socket systemd-udevd.service
enabled
- Enabled through a symlink in .wants directory (permanently or just in /run)
+ Enabled through a symlink in .wants directory (permanently or just in /run).0
@@ -947,7 +1025,7 @@ kobject-uevent 1 systemd-udevd-kernel.socket systemd-udevd.service
linked
- Made available through a symlink to the unit file (permanently or just in /run)
+ Made available through a symlink to the unit file (permanently or just in /run).1
@@ -955,7 +1033,7 @@ kobject-uevent 1 systemd-udevd-kernel.socket systemd-udevd.service
masked
- Disabled entirely (permanently or just in /run)
+ Disabled entirely (permanently or just in /run).1
@@ -963,12 +1041,17 @@ kobject-uevent 1 systemd-udevd-kernel.socket systemd-udevd.service
static
- Unit is not enabled, but has no provisions for enabling in [Install] section
+ Unit file is not enabled, and has no provisions for enabling in the [Install] section.
+ 0
+
+
+ indirect
+ Unit file itself is not enabled, but it has a non-empty Also= setting in the [Install] section, listing other unit files that might be enabled.0disabled
- Unit is not enabled
+ Unit file is not enabled.1
@@ -999,16 +1082,35 @@ kobject-uevent 1 systemd-udevd-kernel.socket systemd-udevd.service
command line, to the defaults configured in the preset
policy files. This has the same effect as
disable or enable,
- depending how the unit is listed in the preset files. For
- more information on the preset policy format, see
+ depending how the unit is listed in the preset files.
+
+ Use to control
+ whether units shall be enabled and disabled, or only
+ enabled, or only disabled.
+
+ For more information on the preset policy format,
+ see
systemd.preset5.
For more information on the concept of presets, please
- consult the
- Preset
+ consult the Preset
document.
+
+ preset-all
+
+
+ Resets all installed unit files to the defaults
+ configured in the preset policy file (see above).
+
+ Use to control
+ whether units shall be enabled and disabled, or only
+ enabled, or only disabled.
+
+
+
mask NAME...
@@ -1018,10 +1120,10 @@ kobject-uevent 1 systemd-udevd-kernel.socket systemd-udevd.service
/dev/null, making it impossible to
start them. This is a stronger version of
disable, since it prohibits all kinds of
- activation of the unit, including manual activation. Use
- this option with care. This honors the
+ activation of the unit, including enablement and manual
+ activation. Use this option with care. This honors the
option to only mask temporarily
- until the next reoobt of the system.
+ until the next reboot of the system.
@@ -1035,6 +1137,25 @@ kobject-uevent 1 systemd-udevd-kernel.socket systemd-udevd.service
+
+ add-wants TARGET
+ NAME...
+ add-requires TARGET
+ NAME...
+
+
+ Adds Wants= resp. Requires=
+ dependency to the specified TARGET for
+ one or more units.
+
+ This command honors ,
+ , and
+ in a similar way as
+ enable.
+
+
+
+
link FILENAME...
@@ -1213,10 +1334,9 @@ kobject-uevent 1 systemd-udevd-kernel.socket systemd-udevd.service
Reload systemd manager configuration. This will reload
all unit files and recreate the entire dependency
tree. While the daemon is being reloaded, all sockets systemd
- listens on on behalf of user configuration will stay
+ listens on behalf of user configuration will stay
accessible.This command should not be confused
- with the load or
- reload commands.
+ with the reload command.
@@ -1240,6 +1360,69 @@ kobject-uevent 1 systemd-udevd-kernel.socket systemd-udevd.service
System Commands
+
+ is-system-running
+
+
+ Checks whether the system is operational. This
+ returns success when the system is fully up and running,
+ meaning not in startup, shutdown or maintenance
+ mode. Failure is returned otherwise. In addition, the
+ current state is printed in a short string to standard
+ output, see table below. Use to
+ suppress this output.
+
+
+ Manager Operational States
+
+
+
+
+
+ Name
+ Description
+
+
+
+
+ initializing
+ Early bootup, before
+ basic.target is reached
+ or the maintenance state entered.
+
+
+
+ starting
+ Late bootup, before the job queue
+ becomes idle for the first time, or one of the
+ rescue targets are reached.
+
+
+ running
+ The system is fully
+ operational.
+
+
+ degraded
+ The system is operational but one or more
+ units failed.
+
+
+ maintenance
+ The rescue or emergency target is
+ active.
+
+
+ stopping
+ The manager is shutting
+ down.
+
+
+
+
+
+
+
default
@@ -1248,6 +1431,7 @@ kobject-uevent 1 systemd-udevd-kernel.socket systemd-udevd.service
isolate default.target.
+
rescue
@@ -1401,7 +1585,7 @@ kobject-uevent 1 systemd-udevd-kernel.socket systemd-udevd.service
Parameter Syntax
- Unit ommands listed above take either a single unit name
+ Unit commands listed above take either a single unit name
(designated as NAME), or multiple
unit specifications (designated as
PATTERN...). In the first case, the
@@ -1473,7 +1657,7 @@ kobject-uevent 1 systemd-udevd-kernel.socket systemd-udevd.service
systemd.unit5,
systemd.resource-management5,
systemd.special7,
- wall1,
+ wall1,
systemd.preset5glob7