Unix Basics 04sp

What is Unix? ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],This tutorial provided by UW ACM http://www.cs.washington.edu/orgs/acm/ Questions to ethel@cs, awong@cs

IWS (Instructional Work Servers) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Logging In ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

The Command Prompt ,[object Object],[object Object],[object Object],[object Object],[prompt]$ <command> <flags> <args> attu1:/u15/awong$ ls –l -a unix-tutorial Command Prompt Command (Optional) flags (Optional) arguments Note : In Unix, you’re expected to know what you’re doing. Many commands will print a message only if something went wrong.

Two Basic Commands ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],fiji:/u15/awong$ man –k password passwd (5) - password file xlock (1) - Locks the local X display until a password is entered fiji:/u15/awong$ passwd

Two Basic Commands (info) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Directories ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Directories (cont’d) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Directories (cont’d further) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Files ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Files (cont’d) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Note : Both of these commands will over-write existing files without warning you!

Permissions for files ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Permissions for files (example) To see the permissions on a file, do a ‘ ls –l ’ attu4:/u15/awong$ ls –l -r--r--r-- 1 awong ugrad_ce 17375 Apr 26 2000 rgb.txt -rw-r--r-- 1 awong ugrad_ce 17375 Apr 5 02:57 set10.csv drwxr-xr-- 1 awong ugrad_ce 1024 Jan 19 19:39 tests Changing Permissions chmod [ugo]+[rxw] <filename> e.g. chmod u+w rgb.txt  gives me permission to change rgb.txt Changing Ownership chown <user>.<group> <filename> e.g. chmod awong.iuns rgb.txt  iuns group now owns rgb.txt Note: You cannot change which user owns file, unless you are an administrator, for security reasons.

Permissions on directories ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Permissions Quiz ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Shell Shortcuts ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Editing Text ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Knowing the basics of emacs and vim will help with the rest of Unix; many programs have similar key sequences.

Printing ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Programs and Compilation (C++) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Programs and Compilation (Java) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

X-Windows ,[object Object],[object Object],[object Object],[object Object]

Linux Machines, iuns ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Unix Basics 04sp

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Unix Basics 04sp