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.