learned "aliases", what are "functions" in .bashrc?
I just learned how to set up an alias for a specific user
by adding the alias to this file:
However, I also saw in the file that there is a section comment
which says "aliases and functions". What are functions in this
sense, how do I create them and what do they do? Are these
somehow functions, e.g. written in perl or c that I can call from
the command line?