Simple Shell in C

Description of Various Files

• main.c - Contains the main function, generates the prompt, takes the input command and calls the various functions according to the command entered.
• ls.c- Contains all the functions required to execute the ls command (including the flags).
• args.c- Contains the function to split the command according to semi colons.Contains simple functions like execvp etc.
• pinfo.c - Contains all the functions required to implement the pinfo function.
• clock.c - Contains all the functions required to implement the timer function.
• headers.h - Header file for including all the required libraries.
• makefile - Make File .

Features

• Piping
• I/O redirection
• Foreground/Background Process Handling
• Signal Handling
• Exectution of all bash commands and custom implementation of some of the commands.

List of Commands which were implemented without using execvp

• cd: change directory
• ls: list all the files and directories inside the current directory
• echo: output whatever was the input
• cat: output the contenets of the file
• jobs: list all the running jobs and their PIDs
• kjob: kill a job
• fg: bring a job to foreground
• bg: send a job to background 10.time: show time
• remindme: set a reminder