A Linux Shell written in C Language gbsh, which implements some of the features found in typical shells, like the bash (Bourne Again Shell) or csh (C-Shell).

Here are Some Features of the Shell:

Prompt

exit command

pwd command

clear command

ls command

cd command

setenv command

unsetenv command

environ command

The shell environment contains shell=/gbsh environment variable

All other commands entered are done by the shell forking and executing the programs as its own child processes

Zombie Processes are handled

Support for I/O redirection on either or both stdin and/or stdout is implemented e.g > < >

Implementation of background processes is also implemented using & symbol at the end of command

Programs can run together such that one program reads the output from another with no need for an explicit intermediate file. In the following line, | command is executed, and its output is used as the input of . This is commonly called piping, since the | character is known as a ``pipe''.

Dynamic chaining of multiple pipes is also implemented

SIGINT signal does not result in termination of the shell.

To Run the Shell, type make to compile all the files and generate an output file, then type ./gbsh to execute the Shell.