Exercises: commands and aliases

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• List all the aliases in your shell
• Add an alias 'hw' that will print 'hello world' to the screen
• Check what is the 'hw' command?
• Remove the 'hw' alias.
• Check that it has been removed.

• Observe what 'ls' and 'ls -l' do and what would be the output of 'ls' if it was not already an alias.
• Create an alias 'll' to do what 'ls -l' does.