File size: 1,486 Bytes
fc0f7bd | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 | ---
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.
```text title="Defaults List overrides"
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]
```
```text title="Config overrides"
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`. |