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Print out your environment settings. Which variable may be used to store the CPU type of your machine?
Make a script that can say something on the lines of "hello, world." Give it appropriate permissions so it can be run. Test your script.
Create a directory in your home directory and move the script to the new directory. Permanently add this new directory to your search path. Test that the script can be executed without giving a path to its actual location.
Create subdirectories in your home directory to store various files, for instance a directory
musicto keep audio files, a directory
documentsfor your notes, and so on. And use them!
Create a personalized prompt.
Display limits on resource usage. Can you change them?
Try to read compressed man pages without decompressing them first.
Make an alias lll which actually executes ls
Why does the command tail
Mount a data CD, such as your Linux installation CD, and have a look around. Don't forget to unmount when you don't need it anymore.
The script from Section 18.104.22.168 is not perfect. It generates errors for files that are directories. Adapt the script so that it only selects plain files for copying. Use find to make the selection. Do not forget to make the script executable before you try to run it.
Try all the mouse buttons in different regions (terminal, background, task bar).
Explore the menus.
Customize your terminal window.
Use the mouse buttons to copy and paste text from one terminal to another.
Find out how to configure your window manager; try different workspaces (virtual screens).
Add an applet, such as a load monitor, to the task bar.
Apply a different theme.
Enable the so-called sloppy focus - this is when a window is activated by just moving the mouse over it, so that you do not need to click the window in order to be able to use it.
Switch to a different window manager.
Log out and select a different session type, like KDE if you were using Gnome before. Repeat the previous steps.