Which of the following commands can be used to change the run level?

The user smith issued the egrep '^[[:upper:]]' words.txt command. What does this command do?

In bash you can use these quote marks for command substitution.

What happens if you try to write to /dev/null and /dev/zero?

What will 'cat /proc/mdstat' tell you?

what the 'netstat -a' command do?

The ____ filesystem contains most of the operating system files.

The ____ command displays the arp table and is used to modify it.

The ____ command can be used to provide a long listing for each file in a certain directory.

You can type the _____ command, with no arguments, to learn your current username and nothing more?

You can execute ____ main types of linux commands.