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# luarocks config
Query information about the LuaRocks configuration.
# Usage
```
luarocks config (<key> | <key> <value> --scope=<scope> | <key> --unset --scope=<scope> | )
```
When given a configuration key, it prints the value of that key
according to the currently active configuration (taking into account
all config files and any command-line flags passed)
Examples:
* `luarocks config lua_interpreter`
* `luarocks config variables.LUA_INCDIR`
* `luarocks config lua_version`
When given a configuration key and a value,
it overwrites the config file (see the --scope option below to determine which)
and replaces the value of the given key with the given value.
* `lua_dir` is a special key as it checks for a valid Lua installation
(equivalent to --lua-dir) and sets several keys at once.
* `lua_version` is a special key as it changes the default Lua version
used by LuaRocks commands (equivalent to passing --lua-version).
Examples:
* `luarocks config variables.OPENSSL_DIR /usr/local/openssl`
* `luarocks config lua_dir /usr/local`
* `luarocks config lua_version 5.3`
When given a configuration key and --unset,
it overwrites the config file (see the --scope option below to determine which)
and deletes that key from the file.
Example: `luarocks config variables.OPENSSL_DIR --unset`
When given no arguments, it prints the entire currently active
configuration, resulting from reading the config files from
all scopes.
Example: `luarocks config`
## Options
```
--scope=<scope> The scope indicates which config file should be rewritten.
Accepted values are "system", "user" or "project".
* Using a wrapper created with `luarocks init`,
the default is "project".
* Using --local (or when `local_by_default` is `true`),
the default is "user".
* Otherwise, the default is "system".
--json Output as JSON
```
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