<varlistentry>
<term><varname>ExecStart=</varname></term>
- <listitem><para>Takes a command line
- that is executed when this service
- shall be started up. The first token
- of the command line must be an
- absolute file name, then followed by
- arguments for the process. It is
- mandatory to set this option for all
- services. This option may not be
- specified more than once, except when
+ <listitem><para>Commands with their
+ arguments that are executed when this
+ service is started.
+ </para>
+
+ <para>When
<varname>Type=oneshot</varname> is
- used in which case more than one
- <varname>ExecStart=</varname> line is
- accepted which are then invoked one by
- one, sequentially in the order they
- appear in the unit file.</para>
+ used, more than one command may be
+ specified. Multiple command lines may
+ be concatenated in a single directive,
+ by separating them with semicolons
+ (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
+ <filename>.desktop</filename> files.
+ The commands are invoked one by
+ one sequentially in the order they
+ appear in the unit file.
+ When <varname>Type</varname> is
+ not <option>oneshot</option>, only one
+ command may be given. Lone semicolons
+ may be escaped as
+ '<literal>\;</literal>'.</para>
+
+ <para>Unless
+ <varname>Type=forking</varname> is
+ set, the process started via this
+ command line will be considered the
+ main process of the daemon.</para>
+
+ <para>The command line accepts
+ '<literal>%</literal>' specifiers as
+ described in
+ <citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry>. Note
+ that the first argument of the command
+ line (i.e. the program to execute) may
+ not include specifiers.</para>
<para>Optionally, if the absolute file
name is prefixed with
- <literal>@</literal>, the second token
+ '<literal>@</literal>', the second token
will be passed as
<literal>argv[0]</literal> to the
executed process, followed by the
further arguments specified. If the
- first token is prefixed with
- <literal>-</literal> an exit code of
+ absolute file name is prefixed with
+ '<literal>-</literal>' an exit code of
the command normally considered a
failure (i.e. non-zero exit status or
abnormal exit due to signal) is ignored
and considered success. If both
- <literal>-</literal> and
- <literal>@</literal> are used they
- can appear in either order. Unless
- <varname>Type=forking</varname> is
- set, the process started via this
- command line will be considered the
- main process of the daemon. The
- command line accepts % specifiers as
- described in
- <citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry>.</para>
+ '<literal>-</literal>' and
+ '<literal>@</literal>' are used they
+ can appear in either order.</para>
<para>On top of that basic environment
variable substitution is
<listitem><para>Additional commands
that are executed before or after
the command in
- <varname>ExecStart=</varname>, respectively. Multiple
- command lines may be concatenated in a
- single directive, by separating them
- by semicolons (these semicolons must
- be passed as separate words). In that
- case, the commands are executed one
- after the other,
- serially. Alternatively, these
- directives may be specified more than
- once with the same effect. However,
- the latter syntax is not recommended
- for compatibility with parsers
- suitable for XDG
- <filename>.desktop</filename> files.
- Use of these settings is
- optional. Specifier and environment
- variable substitution is
- supported.</para></listitem>
+ <varname>ExecStart=</varname>, respectively.
+ Syntax is the same as for
+ <varname>ExecStart=</varname>, except
+ that multiple command lines are allowed
+ and the commands are executed one
+ after the other, serially.</para>
+ </listitem>
</varlistentry>
<varlistentry>
trigger a configuration reload in the
service. This argument takes multiple
command lines, following the same
- scheme as pointed out for
- <varname>ExecStartPre=</varname>
+ scheme as described for
+ <varname>ExecStart=</varname>
above. Use of this setting is
optional. Specifier and environment
variable substitution is supported
stop the service started via
<varname>ExecStart=</varname>. This
argument takes multiple command lines,
- following the same scheme as pointed
- out for
- <varname>ExecStartPre=</varname>
+ following the same scheme as described
+ for <varname>ExecStart=</varname>
above. Use of this setting is
optional. All processes remaining for
a service after the commands
configured in
<varname>ExecStop=</varname>. This
argument takes multiple command lines,
- following the same scheme as pointed
- out for
- <varname>ExecStartPre</varname>. Use
+ following the same scheme as described
+ for <varname>ExecStart</varname>. Use
of these settings is
optional. Specifier and environment
variable substitution is
~ianmdlvl / elogind.git / blobdiff