CIS 1500 Lecture Notes - Lecture 2: Dennis Ritchie, Unix File System, Grep

• School: University of Guelph
• Department: Computing and Information Science
• Course: CIS 1500
• Professor: Judi P.Mc Cuaig

Document Summary

Cis 1500 september 17, 2015: operating systems: The os is a resource manager: resources include video, audio, programs, etc. The kernel is relatively small (the kernel is core of the os), because of this, you can put it on your phone or other small devices. Also can be built specifically for the platform it runs on (osx), or usable on anything such as wristwatch (linux). Finally, it can support fully-featured gui, yet maintains a command line. Too many choices for distributions (linux; many different versions of it that can each do different things). Also, it lacks widely used software (such as. Hardware, kernel, shell (the way the user talks to the kernel), applications. Kernel: the kernel interacts with hardware to perform memory management and tasks. System utilities: commands such as ls, cp, grep, awk, sed, bc, wc, can be combined together to solve problems.