Set Default Level option for Linux tree command

Question

Is there any way to set a default -L option when running the tree command? For example, instead for typing

tree -L 2

I would rather type just

tree

Currently the default "tree" command shows all nested levels, but I typically want to see only 2 levels deep. I would still want the option to override the default if I wanted to see something other than 2 levels deep, ie

tree -L 3

Answer 1

根据上面的Biffen，添加别名即可。