# Cicada Manual
Cicada is a simple bash-like Unix shell.
- [Install cicada](https://github.com/mitnk/cicada/blob/master/docs/install.md)
- [Environment Variables](https://github.com/mitnk/cicada/tree/master/docs/envs.md)
- [Cicada Builtins](https://github.com/mitnk/cicada/tree/master/docs/builtins.md)
- [Completion](https://github.com/mitnk/cicada/tree/master/docs/completion.md)
- [RC File](https://github.com/mitnk/cicada/tree/master/docs/rc-file.md)
- [History](https://github.com/mitnk/cicada/tree/master/docs/history.md)
- [Job Control](https://github.com/mitnk/cicada/tree/master/docs/jobc.md)
- [Customize Prompt](https://github.com/mitnk/cicada/tree/master/docs/prompt.md)
- [Scripting](https://github.com/mitnk/cicada/tree/master/docs/scripting.md)
### Try out cicada with Docker
```
$ docker pull mitnk/cicada
$ docker run --rm -it mitnk/cicada
(in-cicada) $ cinfo
```
## Brief Introduction on its Features
### Run programs and pipelines
```
Documents
Downloads
```
### With redirections
```
1 7 46
```
### Command substitution
```
$ ls -l `which sh`
-r-xr-xr-x 1 root wheel 618512 Oct 26 2017 /bin/sh
$ echo "Time is $(date)."
Time is Sun Sep 2 12:04:13 CST 2018.
```
### Run multiple commands (with logical)
```
$ echo foo; echo bar
foo
bar
$ echo foo && echo bar
foo
bar
```
### Shell expansions
```
$ echo sp{el,il,al}l
spell spill spall
$ echo $SHELL
/usr/local/bin/cicada
$ echo *
Cargo.lock Cargo.toml LICENSE Makefile README.md src target
```
### Math arithmetic directly in the shell!
```
$ 1 + 2 * 3 - 4
3
$ (1 + 2) * (3 - 4) / 8.0
-0.375
$ 2 ^ 31
2147483648
```