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APT-CONFIG(8)                                                    APT-CONFIG(8)

       apt-config - APT Configuration Query program

       apt-config [-hv] [-o=config string] [-c=file] {shell | dump}

       apt-config  is  an internal program used by various portions of the APT
       suite to provide consistent configurability. It accesses the main  con-
       figuration  file  /etc/apt/apt.conf  in a manner that is easy to use by
       scripted applications.

       Unless the -h, or --help option is given one of the commands below must
       be present.

       shell  shell  is  used  to  access the configuration information from a
              shell script. It is given pairs of arguments, the first being  a
              shell  variable and the second the configuration value to query.
              As output it lists a series of shell  assignments  commands  for
              each present value. In a shell script it should be used like:

              RES=`apt-config shell OPTS MyApp::options`
              eval $RES

              This  will set the shell environment variable $OPTS to the value
              of MyApp::options with a default of -f.

              The configuration item may be postfixed with a  /[fdbi].  f  re-
              turns file names, d returns directories, b returns true or false
              and i returns an integer. Each of the returns is normalized  and
              verified internally.

       dump   Just show the contents of the configuration space.

       All  command  line options may be set using the configuration file, the
       descriptions indicate the configuration option to set. For boolean  op-
       tions  you  can  override  the  config  file  by  using  something like
       -f-,--no-f, -f=no or several other variations.

       -h, --help,
              Show a short usage summary.

       -v, --version,
              Show the program version.

       -c, --config-file,
              Configuration File; Specify a configuration  file  to  use.  The
              program  will  read the default configuration file and then this
              configuration file. See apt.conf(5) for syntax information.

       -o, --option,
              Set a Configuration Option; This will set an arbitary configura-
              tion option. The syntax is -o Foo::Bar=bar.


       apt-config returns zero on normal operation, decimal 100 on error.

       APT  bug  page: http://bugs.debian.org/src:apt. If you wish to report a
       bug in APT, please see /usr/share/doc/debian/bug-reporting.txt  or  the
       reportbug(1) command.

       Jason Gunthorpe, APT team.

Linux                          29 February 2004                  APT-CONFIG(8)