---Shell Project--- A mini project to make it easier to test the other projects, and make the OS seem a bit more practical. The shell is organized such that it is very simple to make new commands. The process is 1. Add yourcommand.c to the shell directory, and add appropriate Makefile additions. This file must include the method "void yourcommand(int argc, char **argv) {}" 2. Add the prototype for this method in shell.h 3. Add a new value for the command_tab in shell.c that follows the pattern of the other commands there, and increment the command_count by one.

---IDE Project--- Primary Developer: Owen Royall-Kahin The purpose of this project was to develop a disk driver to communicate with any of the drives that were connected to the DSL machines, and then write a mini filesystem that would allow data to be written to the disk, both as a test and hopefully good enough for the other projects to use, should they have the use for persistent storage.

Filesystem (sub-project): This project was designed to test the hard drive functionality, and potentially create something useful for general OS use. Combined with the shell and disk module, it supports many access commands.

Commands supported: touch, cat, ls, rm, append, df, stat

Implementing ofs in other applications: To implement persistant file storage, include ofs.h in your application. Then, you can use fopen, fread and fwrite as you would expect. However, to create a new file, you must use fcreat (which also returns the file_t).

Direct sector addressing is possible using the debug command "test". test 0 : Reads from sector 0 test 0 hello : Writes "hello" to sector 0

You can use this to trash the filesystem ("test 0 foo"), so that the next time the system boots, mount will "reformat" the drive.