%aptent; %aptverbatiment; %aptvendor; ]> &apt-author.jgunthorpe; &apt-author.team; &apt-email; &apt-product; 2013-11-30T00:00:00Z apt-config 8 APT apt-config APT Configuration Query program &synopsis-command-apt-config; 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 for 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 shell assignment commands for each value present. In a shell script it should be used as follows: OPTS="-f" 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. &apt-cmdblurb; --empty Include options which have an empty value. This is the default, so use --no-empty to remove them from the output. --format '%f "%v";%n' Defines the output of each config option. %t will be replaced with its individual name, %f with its full hierarchical name and %v with its value. Use uppercase letters and special characters in the value will be encoded to ensure that it can e.g. be safely used in a quoted-string as defined by RFC822. Additionally %n will be replaced by a newline, and %N by a tab. A % can be printed by using %%. &apt-commonoptions; &apt-conf; apt-config returns zero on normal operation, decimal 100 on error. &manbugs;