arsh - ARchaic SHell

Simple shell for Unix-like systems written in C, that has a funny name (for germans).

Features

• Can run commands
• You can pipe stdout of one command to stdin of another (ex. cat main.c | wc --lines)
• Your can redirrect output/input with >, >>, <, 2>, &>
• Variables expansion with $PATH and ${HOME} syntax
• Shows custom prompt, if PS1 env variable is set
• Run subcomands with $(hostname) or `pwd` (works with pipes)
• cd builtin command (cd without arguments moves you to $HOME)
• exit builtin command
• CTRL+C stops running command
• Custom readline function with support for cursor moving (<-, ->) and inline editing
• Run scripts with arsh /path/to/script or by putting #!/usr/bin/env arsh at the first line of a script and making it executable
• Run commands with arsh -c 'echo $PATH' to launch something quickly with arsh.

Build

To build it, you don't need any external dependencies. Example with gcc:

gcc main.c -O3 -o arsh