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doc: Give example uses of 'deco'.

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Suggested by Sleep_Walker on #guix.

* doc/guix.texi (Services): Add 'deco' examples.
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Ludovic Courtès 2014-12-07 22:55:06 +01:00
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@ -4078,11 +4078,42 @@ An important part of preparing an @code{operating-system} declaration is
listing @dfn{system services} and their configuration (@pxref{Using the
Configuration System}). System services are typically daemons launched
when the system boots, or other actions needed at that time---e.g.,
configuring network access. They are managed by GNU@tie{}dmd
(@pxref{Introduction,,, dmd, GNU dmd Manual}).
configuring network access.
Services are managed by GNU@tie{}dmd (@pxref{Introduction,,, dmd, GNU
dmd Manual}). On a running system, the @command{deco} command allows
you to list the available services, show their status, start and stop
them, or do other specific operations (@pxref{Jump Start,,, dmd, GNU dmd
Manual}). For example:
@example
# deco status dmd
@end example
The above command, run as @code{root}, lists the currently defined
services. The @command{deco doc} command shows a synopsis of the given
service:
@example
# deco doc nscd
Run libc's name service cache daemon (nscd).
@end example
The @command{start}, @command{stop}, and @command{restart} sub-commands
have the effect you would expect. For instance, the commands below stop
the nscd service and restart the Xorg display server:
@example
# deco stop nscd
Service nscd has been stopped.
# deco restart xorg-server
Service xorg-server has been stopped.
Service xorg-server has been started.
@end example
The following sections document the available services, starting with
the core services.
the core services, that may be used in an @code{operating-system}
declaration.
@menu
* Base Services:: Essential system services.