Byteshell

A simple shell used to execute built-in Linux command.

Project was completed using

• C language
• Shell

General Requirement for project

• All files will be compiled on Ubuntu using gcc.
• Download the Zip file and go to the directory in Ubuntu where dowloaded folder is there by using "cd" command then compile and execute it

How Byteshell works

• Prints a prompt and waits for a command from the user
• Creates a child process in which the command is checked
• Checks for built-ins,and local executable programs
• The child process is replaced by the command, which accepts arguments
• When the command is done, the program returns to the parent process and prints the prompt
• The program is ready to receive a new command
• To exit: enter "exit"

Compilation

gcc *.c

Execution

./a.out

Builtins implemented

• mkdir
• rmdir
• head
• pwd
• echo
• rm
• touch
• exit

echo : prints back the string taken as input

> echo hi guys
hi guys

touch : creates a new file

> touch arrays.c

rm : removes the file taken as input

> rm arrays.c

mkdir : creates a new directory

> mkdir cdirectry

rmdir: removes the directory

> rmdir cdirectry

exit : exits the shell

> exit

pwd: prints the current working directory

> pwd

head: prints the first 10 lines from the file specified

> head main.c
#include "headers.h"


int main()
{

  shell_loop();

  return 0;
}
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