UNIX Shell

To run the shell:

make
./shell

Shell Features:

The directory from which the shell is invoked will be the home directory of the shell represented by ~.
Supports semi-colon seperated list of commands.
'pwd' ,'ls', 'cd' and 'echo' are built in the shell itself (builtin commands)
All other commands are executed by forking parent process.
Background Processes.

Commands Used :

fork : To run a child process under the parent process.
execvp : Used to execute a command along with the arguments.
strtok : Used to tokenize the command.
wait : Used to wait for the child process to end.
perror : Used for various errors.
getcwd : Used for current directory
gethostname : Used to get host name of the OS.