APT−CONFIG - Online Linux Manual PageSection : 8
Updated : 30 ​November ​2013
Source : APT 2.2.4
Note : APT

NAMEapt-config − APT Configuration Query program

SYNOPSISapt−config [−−empty] [−−format '%f "%v";%n'] [−o=config_string] [−c=config_file] {shell | dump | {−v | −−version} | {−h | −−help}}

DESCRIPTIONapt−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 $RESThis 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​.

OPTIONSAll 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​. −−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 %%​. −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​. If configuration settings need to be set before the default configuration files are parsed specify a file with the APT_CONFIG environment variable​. See apt.conf(5) for syntax information​. −o, −−option Set a Configuration Option; This will set an arbitrary configuration option​. The syntax is −o Foo::Bar=bar​. −o and −−option can be used multiple times to set different options​.

SEE ALSOapt.conf(5)

DIAGNOSTICSapt−config returns zero on normal operation, decimal 100 on error​.

BUGSAPT bug page[1]​. If you wish to report a bug in APT, please see /usr/share/doc/debian/bug−reporting​.txt or the reportbug(1) command​.

AUTHORSJason Gunthorpe APT team

NOTES 1. APT bug page ­http://bugs.debian.org/src:apt
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