You are experimenting with a binary in /tmp/foo.d that expects its configuration file at/etc/foo.conf
You don’t want to save it there, but use a symbolic link to /tmp/foo.d/foo.conf instead.
Which command would accomplish that?

What is the highest numbered TCP/IP port?

You need to push the CUPS printer HPLaserjet4, and you want to cancel all print jobs with a message, "hello".
Which command will do this?

You are the system administrator for a consulting firm where several people use Linux as their desktop operating system.
One of your users has installed a commercial publishing program that works under X on a variety of UNIX and Linux platforms.
The user made a series of configuration changes regarding the initial window size, location and color.
Now, he is having difficulty undoing these changes and is asking for your help.
In which file would you think you would most likely find the configuration settings you are seeking to change?

You have written a little startup script (/usr/local/bin/startup.sh) that should automatically execute when entering runlevel 3.
According to the standards, how can this best be achieved?

Which of the following can the chage command NOT change?

What output will the following command sequence produce?
echo ‘1 2 3 4 5 6’ | while read a b c; do echo result: $c $b $a; done

You discovered a pending job for the at command.
Which of the following do you have to use to remove it?

You suspect that a gateway machine on your network has failed but you are unsure which machine.
Which command will help locate the problem?

Which shell built-in command can be used to create a shortcut or pseudonym for a longer command?
Assume a modern bourne like shell, such as bash.