NAME

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

SYNOPSIS

       ucfr [options] <Package> <Path to configuration file>

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
       symbolic 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
       normally an error to try to associate a file which  is  already  associated  with  another
       package, 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
              configuration file from the registry. The association must already  exist;  if  the
              configuration  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
              configuration  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
              consideration 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
       association  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
       previous 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  <srivasta@debian.org>, for the Debian
       GNU/Linux system.