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# **Crab**
`Crab`, a.k.a `Cool Rust Authentication Binary` is a rusty replacement for sudo or doas on Linux systems.
# Installation
### From Source
First run `cargo build --release` to compile the binary.
Then run `install.sh` as root to install crab.
Run `uninstall.sh` as root to uninstall crab.
### Arch Based Systems
If you are on an arch based distro, crab is avaliable on the [AUR](https://aur.archlinux.org/packages/crab) as `crab`.
# Configuration
Each line in the configuration specifies a different rule. Each rule is applied from top to bottom,
so the first onethat matches a user is what is used. The first word is either `permit` or `deny` to
allow or deny a certain group. Then the tags `persist` and `nopass` can be added to allow authoriziation
persistance or skipping respectively. Then a user can be specified by putting their name, or a group by a
colon then the groups name. Finally, if you dont want to run that user as root, you can add `as` and then
a user name to run the process as. All lines starting in a # will be ignored.
For Example
```
deny :docker
permit nopass persist linus as root
permit :wheel persist
#deny stallman
permit nvidia as fu
```
The default configuration file is stored in `/usr/share/crab/crab.conf` and must be coppied to `/etc/crab.conf`.
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