Basic shell

Language: C

Short descriprion

This shell is part of course "Introduction to OS: Part 1" by Codio. It's a wrapper for UNIX file system, written with C language.

Built-In commands

List of built-in commands that can be executed by default:

1. exit -- ends shell execution (no parameters)
2. cd -- changes current direction (exactly 1 parameter)
3. path -- set paths for executing other commands (0 or more parameters)

Special possibilities

1. Stream redirection -- use symbol > to redirect output to file
2. Parallel commands -- use symbol & to call commands simultaneously

Shell execution

Use this commands to start shell:

Interactive mode

gcc -o wish wish.c
./wish

Batch mode (from file batch.txt)

gcc -o wish wish.c
./wish batch.txt

REMARKS

1. Built-In commands cannot be run in parallel mode!

ISSUES

1. Some syntax and command execution problems sometimes (fix needed)
2. DONE Code refactoring needed (add some space optimization and clarification)