A simple shell program to mimic sh shell. It allows the user to execute commands and interact with the kernel.

• Run commands in $PATH
• Run commands from standard input

Built-ins:
exit [status]
env (print current environment values)
cd
setenv (sets environment value)
unsetenv (clear environment value)

To use this shell, first download this repository into your local machine by issuing the following command in your local terminal.

git clone https://github.com/sumin3/simple_shell.git

Change directory into the simple_shell directory created by the git clone command and issue the following command to compile the code

gcc -Wall -Werror -Wextra -pedantic *.c -o shell

Once the files are compiled you can run the program by issuing the command

./shell

Alternatively, you can copy the shell executable into the /usr/local/bin directory by issuing

sudo cp shell /usr/local/bin

After the above has been done, you can run the program by issuing the command

shell

The following example shows how to start the shell and issue a ls command to list the contents of the directory then exit the shell

$ ./shell
$> ls
README.md	shell		shell_error.c		shell_helper1.c
holberton.h	shell.c		shell_get_builtin.c	shell_helper2.c
$> exit
$

You can also use the shell in a non-interactive mode by piping in a command as follows: `` $ echo "/bin/ls" | ./shell README.md shell shell_error.c shell_helper1.c holberton.h shell.c shell_get_builtin.c shell_helper2.c $ `

click here for a more comprehensive list of commands and expected output.

There is a separate repository for the test suite Here Follow the instructions there to run a more comprehensive test on the simple shell program.

Sumin Yu
Peter Wu