Free LCP-001 Questions Attempt

What command will remove duplicate lines from a sorted file?

Which of the following GNU commands would be the most likely command you'd use to find the system load average?

You have an updated RPM called screensaver-1.1.i386. rpm. You have version 1.0 installed. Using RPM, how do you view the changelog of this file to see if you should install the update?

You have a text file with tab-separated values, but your application needs them space-separated. What command would you use from the Bash shell to achieve this? Please fill in the command only, without any options.