




                Unix/Linix Skills: (command I should know)
                
                who -> list everyone currently logged on
                sort -> sorts data
                man -> display the manual pages
                        it shows a single page at time (Unix/Linux pager)
                        when paging I have commands:
                           h -> help
                           q -> quit
                           spacebar -> foward a screen
                           b key -> back a screen
                           return key -> forward a line
                pwd <- print working dir (shows which dir you are in)
                cd <- change dir
                mkdir <- make a new dir
                rmdir <- remove an EMPTY dir (empty means just . and ..)
                ls <- list dir
                        ls <path> 
                        ls -a <- show hidden file (file that start w '.')
                        ls -l <- long listing, show permissions, size, owner, etc
                cp <- copy file(s)
                        cp <from> <to>  
                ln <- create a link (alias)
                mv <- move, can be used to rename a file and/or move a file
                      mv <from> <to> if the <to> is a dir, this is move
                                     if the <to> is not a dir it is a rename
                                     if you use wildcard in the <from> the <to> 
                                        MUST be a dir
                rm <- remove (delete) files/dirs
                      WARNING:  this command rm a* says delete all files in the currert
                                    dir that start with 'a'
                                this command rm a * (I hit space bar by accident)
                                say delete a file named 'a' then delete all files
                      rm -r (recursive delete)
                      rm -f (force delete)
                      rm -i (interactive)
                cat <- output the contents of a file 
                more/pg <- page content, this can read a file or be used in pipe '|'
                head/tail <- output the first/last few lines of a file
                uname <- output info about the OS
                id <- will show the current user id and details
                passwd <- to change MY password
                type <- list the path to a command
                grep <- search text
                find <- search for files
                ps <- list running processes
                
                
                
                
