This repository contains our own simple version of the shell, a command line interpreter written in C language.
The Flowchart shows how the program was built.
| File | Description |
|---|---|
| man_1_simple_shell.1 | It is the manual for using the shell. Contains a description, ways for invocation, and some examples of builtins and executables that can be used inside the command line interpreter. |
| shell.h | It is a header file that contains all the c libraries needed for the program, the description and prototypes of all the functions, structures, builtins, printing functions, and helpers. |
| shell.c | It contains the entry point of the program, where the execution begins. It shows the prompt and receives the characters written in the command line. |
| get_line.c | It gets the string written from the command line and save it in a predefined buffer, allocating enoght space. |
| str_tok.c | It cuts the string in parts. |
| tokenize.c | It save the parts to be analyzed later. |
| builtins_list.c | It compare the command with a list of builtins, and if there is a match, It calls the associated builtin. |
| builtins.c | It contains the code of the builtins included in the program. |
| find_in_path.c | It analyze the global variable path. |
| execute.c | It tries to execute the string as a command. |
| helpers_string.c | It contains some functions that help the main functions to process the strings. |
| helpers_printing.c | It contains some functions that help to print content in the standar error and the standar output. |
gcc -Wall -Werror -Wextra -pedantic *.csimple_shell$./a.out
dali<3 ls
README.md
dali<3 exit
simple_shell$This project has been tested on Ubuntu 14.06.6 LTS