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
       configuration 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
              returns 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
       options you can override the config file by using something like
       -f-,--no-f, -f=no or several other variations.


       --help Show a short usage summary.


              Show the program version.


              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.


              Set a Configuration Option; This will set an arbitrary
              configuration option. The syntax is -o Foo::Bar=bar.


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

       See the APT bug page <URL: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.

       APT was written by the APT team <apt@packages.debian.org>.

                                16 October 2007                  APT-CONFIG(8)