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I want to use all the aliases present in my system

If you usually want to see all of the aliases in your system, you can simply use tha alias command: 

alias

If you pipe the output to a file: 

alias > $HOME/my_aliases/current.aliases

You can use Bee to register them: 

bee -register $HOME/my_aliases/current.aliases

If Bee can find items to import, you should see an output similar to the one below: 

Added 4 new elements

Note that you'll need to use the absolute path to these files. Using relative paths might cause unexpected behaviour.