This rshell has basic functionality.
It can print a command prompt and read in a command line.
Command lines have the format of
executable [argumentList] [connector cmd]
The connector will be either || or && or ;
Anything typed after # will be considered a comment
The shell can be exited with the command exit
The redirection operations (<, >, >>, <<<) can be used to redirect inputs and output.
Errors with piping