UNIX for Advanced & Expert Users

Hey everyone,
I need some help for some unix commands.

- List all processes in the file "ProcessUser.txt" sorted by the users and in the file "ProcessName.txt" sorted by the name of the process.

- How much time does the command "ls -alR /" need and compared to that, how much time is needed for the command "ls -alR / > XXX 2>&1"?

- Sort the list of modules by their size, the number of modules it is used by,
and dependencies respectively in the files "ModluesSize.txt", "ModulesNumber.txt", and "ModulesDependeny.txt"

I don't know how to do this tasks, so I would be really happy if you could help me.

Thank you

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Hey,
I go to school, but this is no homework. Our teacher mentioned that there are many things which can be done in the Ubuntu Terminal. I became interested and looked for some tasks in the Internet to do in the Terminal with Commands. I found a sheet with tasks and thought that if I would be able to finish all of them, my teacher would give me some extra pluses.

But I dont know if he really will do this, so it is no homework.