Let's say I want to modify the original behavior of the
ls tool this way:
$ ls Hello World file1 file2 ...
How can I do this?
ls I would like to run another command let's say
echo "Hello World!".
The quick solution I see is using alias:
alias orig_ls="ls" alias ls='echo "Hello World!"'
However, this is not a real solution since when I will run
orig_ls it will output