[CPSC 1280] - Final Exam Guide - Everything you need to know! (92 pages long)

• School: Langara College
• Department: Computer Science
• Course: CPSC 1280
• Professor: Wei Cai

Document Summary

Abstractions are implemented with system software: creates high level abstractions files, directories, processes ,etc. comes with a generic interface write block from primary memory onto disk load(block, length, device) seek(device, 236) out(device, 9) path changes your current working directory to path absolute path: cd /lib/mkinitrd/bin relative path: cd : the parent directory of the current directory cd : if you change into a directory and you subsequently want to return to your original directory. Echo: echo is meant to display a message on the terminal. /bin/bash: with >, we can redirect output to files instead. $ echo date > foo: escape sequences only supported by at&t, but not bsd. Begin with a \ and is followed by a single character or zeroprefixed number: e. g. \c: no newline, \n: newline, : tab. $ printf my current shell is %s\n . [beep heard: with >, we can redirect output to files instead. $ printf text to be entered > foo.