ghettocli

A ghetto command line interpreter.

Usage

To compile, simply run make. Then execute gcli (or myshell, if you insist).

Usage: ./gcli [-v] [-f batchfile]

Interactive mode: ./gcli

Execute a batch file: ./gcli batchfile.sh

Commands

The following commands can be used in both batch and interactive modes.

Provided commands:

• ls/dir [arg] - print files in the current directory. If arg is provided, prints the files there.

• pwd - print the path of the current directory.

• cd [arg] - change the current directory.

• echo [arg] - output the current text

• children - output the number of child processes being executed by the shell

  Spawn a child process: sleep 300 & Spawn another child process: sleep 150 & Display the children: children Children: 13839 13840 0 0 0

• pause - pause the shell in addition to any child processes

• clear/clr - clear the display

• help - displays this file

• quit - exits the shell and kills all child processes.

Unmatched commands:

• [cmd] - Accepts executable files by absolute path or will search through the PATH environment variable. Default execution is foreground.
• [cmd] & - execute a command in the background.

Termination

To terminate the shell and child processes.

• Input quit.
• Use Ctl-D to send the process SIGQUIT. Do not use Ctl-C. We chose to ignore Ctl-C in order to prevent improper termination when launching another shell within ghettocli, e.g. python.