oshell

Todo

Key features

• Show a prompt indicating user input e.g. > ✅
• Read a command entered by the user e.g. ping google.com ✅
• fork() for every user command ✅
• wait() for the command to finish executing ✅
• builtin commands like cd exit help, without calling external programms ✅
• Error handling -- meh kinda most minimal, not extensive
• redirect output with xx > output.txt ✅

Environment Variables

• echo $USER should yield the user (ie. ole), with getenv()

MVP

• read a system command parse it and execute it

Maybe some good stuff in here.
https://pdos.csail.mit.edu/6.828/2018/labguide.html
https://barsky.ca/marina/SR/c2018/lectures/7.pipe/06.01.FileDescriptorsPipes.pdf