4.6.1. General
Run top in one terminal while you do the exercises in another.
Run the ps command.
Read the man pages to find out how to display all your processes.
Run the command find / . What effect does it have on system load? Stop this command.
In graphical mode, start the xclock program in the foreground. Then let it run in the background. Stop the program using the kill command.
Run the xcalc directly in the background, so that the prompt of the issuing terminal is released.
What does kill -9 -1 do?
Open two terminals or terminal windows again and use write to send a message from one to the other.
Issue the dmesg command. What does it tell?
How long does it take to execute ls in the current directory?
Based on process entries in /proc , owned by your UID, how would you work to find out which processes these actually represent?
How long has your system been running?
Which is your current TTY?
Name 3 processes that couldn't have had init as an initial parent.
Name 3 commands which use SUID mode. Explain why this is so.
Name the commands that are generally causing the highest load on your system.
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