Cicada Unix Shell

Cicada is a simple Unix shell written in Rust. It's ready for daily use.

Documents

Try out cicada with Docker

$ docker pull mitnk/cicada $ docker run --rm -it mitnk/cicada

Features

run programs and pipelines

``` $ ls | head -n3 Desktop Documents Downloads

$ echo foo bar | awk -F " " '{print $2, $1}' bar foo ```

with redirections

$ ls file-not-exist 2>&1 | wc > e.txt $ cat e.txt 1 7 46

command substitution

``$ ls -lwhich 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

$ echo foo || echo bar foo ```

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 ```

do math arithmetic directly in the shell!

$ 1 + 2 * 3 - 4 3 $ (1 + 2) * (3 - 4) / 8.0 -0.375

job control

```

run sleep in backgroup

$ sleep 200 & [1] 89

listing jobs

$ jobs [1] 89 Running sleep 200 &

bring it as foreground

$ fg 1 sleep 200

now you can use `Ctrl-Z` to suspend it

^Z [1] 89 Stopped sleep 200

$ jobs [1] 89 Stopped sleep 200

run it again (in background) with bg

$ bg $ jobs [1] 89 Running sleep 200 & ```

Cicada is also a library (BETA)

Read APIs here: https://docs.rs/cicada/.

Install Cicada

Please refer to docs/install.md.