This is an implementation of a simple UNIX command interpreter written as part of the low-level programming at ALX SWE.
This is a simple UNIX sommand language interpreter that reads commands from the standard output or a file and executes the command. This simple shell is based on bash(Bourne Again shell)
Style guidelines: Betty style
- Allowed editors: vi, vim, emacs
- All your files will be compiled on 'Ubuntu 14.04 LTS'
- Your C programs and functions will be compiled with 'gcc 4.8.4' using the flags '-Wall -Werror -Wextra and -pedantic
- Your code should use the Betty style. It will be checked using betty-style.pl and betty-doc.pl'
- No more than 5 functions per file
- All your header files should be include guarded
- This shell should not have any memory leaks
- Unless specified otherwise, your program must have the exact same output as sh (/bin/sh) as well as the exact same error output.
- Fork the repository.
- clone the repository to your local machine.
- Change into the repository 'cd simple_shell'
- Compile the program using the command: 'gcc -Wall -Werror -Wextra -pedantic -std=gnu89 *.c -o hsh'
- Type in './hsh' to run the executable.
| File | Description |
|---|---|
| AUTHORS | Authors of the project |
| README.md | Information about the project |
| _getenv.c | Gets the environment variable |
| _strtok.c | Tokenizes the string |
| builtins.c | Builtin Commands |
| check_command.c | Checks for command |
| check_prog_name.c | Check for name |
| error.c | Handles all errors |
| execute_all_commands.c | Executes all functions |
| execute_cmd.c | Executes single commands |
| get_command.c | Gets a command |
| get_next_separator.c | Grts the next separator |
| initialize_shell_vars.c | Initializes a struct |
| ksh_cd.c | cd command |
| ksh_env.c | env command |
| khs_exit.c | Exit builtin |
| ksh_setenv_unsetenv.c | Set and unset environment variables |
| main.c | Entry point to the program |
| main.h | Prototypes of functions and headers. |
| parse_and_exec.c | executes command as given |
| parse_command.c | tokenize command entered |
| remove_comment.c | Removes comment from command to be executed |
| search.c | search absolute filepath |
| signal_handler.c | Handles signals |
| Split_commands.c | Splits a command to two srings |
This program emulates some of the basic functionalities of the bash. The man pages were used extensively in the writing of this program.
This program was written as a part of the curriculum for ALX SWE.