Differences between \/bin \/sbin and others? How to use search function in ubuntu terminal? In ubuntu, is there a command to show a list of all autostart services? What are Linux Runlevels? How do I run a script at start up? Why do we use ".\/" to execute a file? How do I check the version of Ubuntu I am running? How to compress and extract file(s) by using tar command? How to copy local files to remote server or download files from remote server? How to connect to remote server in terminal? Differences between chown and chmod?