metadata
id: command_line_overrides
title: Command line overrides
You can manipulate your configuration via the command line. This includes:
- Manipulation of the defaults list
- Manipulation of the resulting config object
Both of those looks similar in the command line. Command line overrides matching a Config group are manipulating the Defaults List; The rest are manipulating the resulting config object.
PACKAGE : PATH[.PATH]*
PATH : [A-Za-z0-9_-]+
OPTION : .*
# Changing an existing item
GROUP[@SRC_PKG[:DEST_PKG]][=OPTION]
# Appending a new item
+GROUP@[SRC_PKG]=OPTION
# Deleting an existing item
~GROUP[@PACKAGE][=OPTION]
KEY=VALUE
KEY : .+
VALUE : .+
# Changing an existing item
KEY=VALUE
# Appending a new item
+KEY=VALUE
# Deleting an existing item
~KEY[=VALUE]
Examples
Config values
- Overriding a config value :
foo.bar=value - Appending a config value :
+foo.bar=value - Removing a config value :
~foo.bar,~foo.bar=value
Defaults list
- Overriding selected Option:
db=mysql - Overriding selected Option and renaming package:
db@src_pkg:dst_pkg=mysql - Renaming package:
db@src_pkg:dst_pkg - Appending to defaults:
+experiment=exp1 - Deleting from defaults:
~db,~db=mysql
When renaming a package, if the current item in the defaults list does not have a package,
use the empty string for the source package, e.g: db@:dst_package.