CISC 220 Lecture Notes - Lecture 3: Putty, Secure Shell, Working Directory

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Shell text program for communicating with the os: we will use bash. How to putty: zeus. caslab. queensu. ca linux log in with caslab info. Initially are talking to zeus (server) so you must enter caslinux : brings us menu on cpu usage where you select the system you should use, don"t interact with zeus too much. How to bash: echo , could type in bash. Commands: command = sequence of words separated by spaces, first word = name of command, remaining words = arguments, arguments starting with a dash are flags . Wildcards: * = any sequence of zero or more characters, ex: ls *e* = list all file names containing an e. = any single character: can use in place of a character for example, will not match . as they are hidden . [abc] any letter in the brackets (so a, b, or c) ls [aeiou]* = list any file name that starts with a vowel.

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