RShell

This project is a comprehensive implementation of a bash developed from scratch.

Usage

Commands will have the following format:

$ executable [argumentList] [connector] [cmd] ...

RShell now works with > < and >> operators. Where there can be any number of commands seperated by either ||, &&, or ; which are the only valid connectors. The executable can be any executable program located at one of the PATH environmental variable locations (and argumentList is a list of zero or more arguments separated by spaces). The connector is an optional way you can run multiple commands at once. If a command is followed by ;, then the next command is always executed; if a command is followed by &&, then the next command is executed only if the first one succeeds; if a command is followed by ||, then the next command is executed only if the first one fails. The connectors do not impose any precedence and the command line should be execute from left to right. For example:

$ ls -a
$ echo hello
$ mkdir test

is equivalent to:

$ ls -a; echo hello; mkdir test

Known Bugs

Command cd will not work
echo hello world && will not ask for further input
Anything after a # will be a comment, so if you have a command like echo #, the '#' will not print
Up arrow will not remember previous commands
Tabs will not autocomplete