Simple Shell

Description

Simple Shell is a program that takes some commands from the keyboard and gives them to the operating system to perform.

Install And Use It

• Clone this repo with git clone
• Go to the source directory using cd simple_shell
• Compile all the source code files with gcc -Wall -Werror -Wextra -pedantic *.c -o hsh
• In the current directory will be created the executable file hsh with the simple shell.

Using simple shell in Interactive mode

• Enter into the interactive mode with ./hsh after that you will see the prompt: (>) waiting for your input.
• Enter any command that you want, for example: ls -l and press enter.
• See the output of your command and the prompt will rise again.
• Exit with the builtin command exit or with the CTRL + D or CTRL + C signals.

Using simple shell in Non-Interactive mode

The shell can also be run like sh you online need to pipe it your input and it will execute your input and print the output to the stdout, for doing that you can do for example echo "/bin/ls -la *.c" | ./hsh

Files

Filename	Description
holberton.h	Header file with all the prototypes
main.c	Main function
conditionals1.c	Exit and env functions
conditionals2.c	Make and free the env
argsfunctions.c	Tokenize
strfunctions.c	String Functions
findpath.c	Execute commands in the path
p_error.c	Prints error message
man_1_simple_shell	Manual page of the Simple Shell
README.md	General description of the Simple Shell
AUTHORS	List of the authors of this proyect

Functions

Function Name	Description
strDup	Returns a pointer to new memory allocation Space
_strLen	Returns the length of a string
_strCmp	Compare two strings
strConcat	Concatenate two strings
printStdout	Writes a string to standar output
parseString	Tokenize and returns an array of strings
_realloc	Reallocate a pointer to double the space
checkForBuiltins	Check if a command is a builtin
ourExit	Exit the program
ourEnv	Prints the current environment
find_path	Find a PATH Variable
path_execute	Executes a command in the path
check_for_path	Chacks if the command is in the PATH
makeEnv	Make the shell env from the env passed to main
freeEnv	Free the env of the shell
p_error	Prints the error messages
_print	Prints a string
_itoa	Converts an integer to a string
_atoi	Converts a string to an integer
execute_cwd	Executes a command in the current directory
check_for_dir	Check if the command is a part of a path

Documentation

Display the manual with the following command: man ./man_1_simple_shell

Authors

• Miguel Angel Cipamocha Figueredo (MiguelCF06)
• Juan David Suarez Wilches (juandsuarezz)

At Holberton School

April - 2020