Right. A dyslexic typo sorry doesn’t That was my point. He needed a tool and didn’t have one so he wrote a singular tool to solve the problem. We now consider that tool pretty much standard equipment On Sun, Jul 4, 2021 at 10:51 PM Warner Losh wrote: > > > On Sun, Jul 4, 2021, 8:39 PM Clem Cole wrote: > >> Noel. Pls check the TUHS archives and I think you will see sed does yet >> exist in 6th edition when Joy wrote head in 1977. Certainly not yet at >> UCB. >> > > V6 doesn't have sed. > > Warner > > On Sun, Jul 4, 2021 at 9:34 PM Noel Hunt wrote: >> >>> > 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). >>> >>>> -- >> Sent from a handheld expect more typos than usual >> > -- Sent from a handheld expect more typos than usual