Simple Shell

Man Page · Compilation · Commands · Usage

Description

Simple Shell is a command line interpreter developed in C language that emulates the most basic functionality of sh.

Man page

The man page is a file wich explains in detail how Simple Shell works. If you want see a full explanation of this function you can run our man page this way:

$ man ./man_1_simple_shell

Flowchart

Compilation

To compile the program this command has to be executed:

$ gcc -Wall -Werror -Wextra -pedantic -std=gnu89 *.c -o hsh

To run the shell is like this:

$ ./hsh

List of built-in commands

This list is of the built-in commands, apart from those found in the PATH.

Command	Description
env	Displays the current environment
exit	Causes the shell to terminate

Usage

The shell can be used in interactive or non-interactive mode. The interactive mode is how the shell is normally used, the executable file is run and we can write commands, here is an example:

$ ./hsh
hsh$ ls
file1 file2 directory/
hsh$ pwd
/home/user/simple_shell/
hsh$ echo hello_world
hello_world
hsh$ exit
$

In the non-interactive mode you pass the command to the executable file with a pipe operator, as shown in the following example:

$ echo "/bin/ls" | ./hsh
hsh main.c shell.c test_ls_2

$ cat test_ls_2 | ./hsh
hsh main.c shell.c test_ls_2
hsh main.c shell.c test_ls_2

Authors

• Charline Mosquera
• Felipe Villamizar

Project developed during the Holberton School program.