X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=man%2Fsystemd.service.xml;h=94e72df9b47a48cbc09ceb18e78317b311e79bd4;hp=8eda85f62db6546684545c5a2082b5cdccd5781d;hb=494a66821815e8109afa136bd42818b85da38c09;hpb=79640424059328268b9fb6c5fa8eb777b27a177e diff --git a/man/systemd.service.xml b/man/systemd.service.xml index 8eda85f62..94e72df9b 100644 --- a/man/systemd.service.xml +++ b/man/systemd.service.xml @@ -76,8 +76,8 @@ systemd.kill5, which define the way the processes of the service are terminated, and in - systemd.cgroup5, - which configure control group settings for the + systemd.resource-control5, + which configure resource control settings for the processes of the service. Unless DefaultDependencies= @@ -305,9 +305,10 @@ ExecStart= Commands with their arguments that are executed when this - service is started. The first - argument must be an absolute path - name. + service is started. For each of the + specified commands, the first argument + must be an absolute and literal path + to an executable. When Type is not , only one @@ -320,11 +321,7 @@ (these semicolons must be passed as separate words). Alternatively, this directive may be specified more than - once with the same effect. However, - the latter syntax is not recommended - for compatibility with parsers - suitable for XDG - .desktop files. + once with the same effect. Lone semicolons may be escaped as \;. If the empty string is assigned to this option, the @@ -332,6 +329,35 @@ prior assignments of this option will have no effect. + Each command line is split on + whitespace, with the first item being + the command to execute, and the + subsequent items being the arguments. + Double quotes ("...") and single + quotes ('...') may be used, in which + case everything until the next + matching quote becomes part of the + same argument. Quotes themselves are + removed after parsing. In addition, a + trailing backslash + (\) may be used to + merge lines. This syntax is intended + to be very similar to shell syntax, + but only the meta-characters and + expansions described in the following + paragraphs are understood. + Specifically, redirection using + <, + <<, + >, and + >>, pipes + using |, and + running programs in the background + using & + and other elements of shell + syntax are not supported. + + If more than one command is specified, the commands are invoked one by one sequentially in the order @@ -350,10 +376,11 @@ The command line accepts % specifiers as described in - systemd.unit5. Note - that the first argument of the command - line (i.e. the program to execute) may - not include specifiers. + systemd.unit5. + Note that the first argument of the + command line (i.e. the program to + execute) may not include + specifiers. Basic environment variable substitution is supported. Use @@ -369,11 +396,10 @@ case it will be replaced by the value of the environment variable split up at whitespace, resulting in zero or - more arguments. Note that the first + more arguments. To pass a literal dollar sign, + use $$. Note that the first argument (i.e. the program to execute) - may not be a variable, since it must - be a literal and absolute path - name. + may not be a variable. Optionally, if the absolute file name is prefixed with @@ -401,13 +427,47 @@ ExecStart=/bin/sh -c 'dmesg | tac' - For services run by a user - instance of systemd the special - environment variable - $MANAGERPID is set - to the PID of the systemd - instance. - + Only select environment variables + are set for executed commands. See + systemd.exec5. + + + Example: + ExecStart=/bin/echo one ; /bin/echo "two two" + + This will execute + /bin/echo two + times, each time with one argument, + one and + two two, + respectively. Since two commands are + specified + Type=oneshot must + be used. + + Example: + ExecStart=/bin/echo / >/dev/null & \; \ +/bin/ls + + This will execute + /bin/echo with five + arguments: /, + >/dev/null, + &, + ;, and + /bin/ls. + + Example: + Environment="ONE=one" 'TWO=two two' +ExecStart=/bin/echo $ONE $TWO ${TWO} + + This will execute + /bin/echo with four + arguments: one, + two, + two, and + two two. + @@ -523,9 +583,10 @@ Takes a unit-less value in seconds, or a time span value such as "5min 20s". Pass 0 to disable the timeout - logic. Defaults to 90s, except when + logic. Defaults to TimeoutStartSec= from the + manager configuration file, except when Type=oneshot is - used in which case the timeout + used, in which case the timeout is disabled by default. @@ -544,7 +605,8 @@ Takes a unit-less value in seconds, or a time span value such as "5min 20s". Pass 0 to disable the timeout - logic. Defaults to 90s. + logic. Defaults to TimeoutStartSec= from the + manager configuration file. @@ -650,7 +712,7 @@ timeout for the service expires. If set to , the service - will be restarted regardless whether + will be restarted regardless of whether it exited cleanly or not, got terminated abnormally by a signal or hit a timeout. @@ -860,12 +922,15 @@ these two options, this rate limiting may be modified. Use StartLimitInterval= - to configure the checking interval - (defaults to 10s, set to 0 to disable + to configure the checking interval (defaults to + DefaultStartLimitInterval= in + manager configuration file, set to 0 to disable any kind of rate limiting). Use StartLimitBurst= to configure how many starts per interval - are allowed (defaults to 5). These + are allowed (defaults to + DefaultStartLimitBurst= in + manager configuration file). These configuration options are particularly useful in conjunction with Restart=, however @@ -969,33 +1034,6 @@ range 0-99. - - FsckPassNo= - Set the fsck passno - priority to use to order this service - in relation to other file system - checking services. This option is only - necessary to fix ordering in relation - to fsck jobs automatically created for - all /etc/fstab - entries with a value in the fs_passno - column > 0. As such it should only be - used as option for fsck - services. Almost always it is a better - choice to add explicit ordering - directives via - After= or - Before=, - instead. For more details see - systemd.unit5. If - used, pass an integer value in the - same range as - /etc/fstab's - fs_passno column. See - fstab5 - for details. - - @@ -1006,7 +1044,7 @@ systemctl8, systemd.unit5, systemd.exec5, - systemd.cgroup5, + systemd.resource-control5, systemd.kill5, systemd.directives7