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UCFR(1)                              Debian GNU/Linux manual                              UCFR(1)

NAME
       ucfr - Update Configuration File Registry:  associate packages with configuration files

SYNOPSIS
       ucfr [options]  

DESCRIPTION
       Where  Package  is the package associated with the configuration file (and, in some sense,
       its owner), and Path to configuration file is the full path to the location (usually under
       /etc)  where  the  configuration  file lives, and is potentially modified by the end user.
       Please note that usually this means that we register actual files, and not symbolic  links
       to  files.   ucfr will follow symbolic links and register the real file,  and not the sym‐
       bolic link.

       This script maintains an association between configuration  files  and  packages,  and  is
       meant  to help provide facilities that dpkg provides conffiles for configuration files and
       not shipped in a Debian package, but handled by the postinst by ucf instead.  This  script
       is idempotent, associating a package to a file multiple times is not an error.  It is nor‐
       mally an error to try to associate a file which is already associated with  another  pack‐
       age, but this can be over ridden by using the --force option.

OPTIONS
       -h, --help
              Print a short usage message

       -n, --no-action
              Dry  run.  Print the actions that would be taken if the script is invoked, but take
              no action.

       -d [n], --debug [n]
              Set the debug level to the (optional) level n (n defaults  to  1).  This  turns  on
              copious debugging information.

       -p, --purge
              Removes  all vestiges of the association between the named package and the configu‐
              ration file from the registry. The association must already exist; if the  configu‐
              ration  file  is  associated  with some other package, an error happens, unless the
              option --force is also given. In that case, the any associations for the configura‐
              tion  file  are removed from the registry, whether or not the package name matches.
              This action is idempotent, asking for an association to be  purged  multiple  times
              does not result in an error, since attempting to remove an non-existent association
              is silently ignored unless the --verbose option is used  (in  which  case  it  just
              issues a diagnostic).

       -v, --verbose
              Make the script be very verbose about setting internal variables.

       -f, --force
              This option forces operations requested even if the configuration file in consider‐
              ation is owned by another package. This allows a package to hijack a  configuration
              file  from  another  package, or to purge the association between the file and some
              other package in the registry.

       --state-dir /path/to/dir
              Set the state directory to /path/to/dir instead of the default /var/lib/ucf.   Used
              mostly for testing.

USAGE
       The  most  common case usage is pretty simple: a single line invocation in the postinst on
       configure, and another single line in the postrm to tell ucfr to forget about the associa‐
       tion  with  the  configuration  file  on  purge (using the  --purge option) is all that is
       needed (assuming ucfr is still on the system).

FILES
       /var/lib/ucf/registry, and /var/lib/ucf/registry.X, where X is a small integer, where pre‐
       vious versions of the registry are stored.

       /etc/ucf.conf

EXAMPLES
       If  the  package  foo  wants  to  use  ucfr  to associate itself with a configuration file
       foo.conf, a simple invocation of ucfr in the postinst file is all that is needed:

       ucfr foo /etc/foo.conf

       On purge, one should tell  ucf  to  forget  about  the  file  (see  detailed  examples  in
       /usr/share/doc/examples):

       ucfr --purge foo /etc/foo.conf

SEE ALSO
       ucf(1), ucf.conf(5).

AUTHOR
       This  manual  page  was  written  Manoj  Srivastava  , for the Debian
       GNU/Linux system.

Debian                                     Apr 11 2006                                    UCFR(1)

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