> But note that when wnj wrote head(1), Joy followed the
> famous `Unix Philosophy' of doing one (small) job
> well. Which means he did not add a feature *i.e.*
> abusing, an old program, like cat(1), and add some new
> switch to it that that told the program stop outputting
> after n lines. Instead Joy wrote a simple new tool.
He didn't need to abuse any existing program by adding new
flags or the like; unless I am mistaken, `sed Nq', for some
number `N', does exactly what `head -N' would do on a single
file, obviating the very need for head(1).