welcome back it's been a while so thisis the video that I've not been lookingforward to making to be honest but we'llgo ahead and we'll do it anyway Mac OSm3bsd they share a history a lineagelet's have a look at that today[Music]FreeBSD and Mac OS they are very similarthey're both well Mac OS is a Unixcertified OS FreeBSD is a Unix like butthey uh they share common lineage sowe'll have a look at that today and uhlet's dive in and have a lookso looking at Wikipedia it will give youa lot of details on Mac OS we're goingto concentrate on Mac OS 10 Mac OS XI'm pretty sure it's Mac OS 10 not Xbut we're not going to start a war overthat so Mac OS 10first came out in 99 as Mac OS 10 server1.0 and there are a lot of tools in thein the in the operating system that comeover from the BSD lineage so we'll havea look at thatso there we go as a result of nextcomputer Next Step was based on the Mackernel developed CMU Carnegie Mellonmbsd there you go look at that animplementation of Unix dating back tothe 70s so there we go that's prettymuch the the history of it to be honestso let's have a look at the diagram andsee what we get so let's look at Mac OSwhere are you there it is third one inso what you'll notice there is a lot ofthe stuff from Mac OS went into FreeBSDand vice versa well isn't thatinteresting now from what I've seen fromcommit messagesit's fairly evident that Apple docontribute to the FreeBSD source codeand that's a good thing we like that welike to see companies putting back sothat's that's a positive now I'm prettysure but I haven't seen it writtenanywhere but I'm pretty sure that Mac OS10.has freebsd's Network stack to say thatit's the Mac kernel with the FreeBSDbase would be oversimplify thingsbecause it's not as simple as that andthere's a lot more to it you'll findthat things aren't quite the same let'sget this out of the way we don't needthat have a quick look at my you nameminus Aid so there you you'll see it'sthe Darwin kernel which is the name ofthe Mac kernel now this particular Macactually all the way down here it'sCatalina so it's quite an old onegoes back to 2019and 2020 is when Big Sur came out so wecan't really put anything newer on it wecan but it's a lot of faffing around andperhaps I'll do that at some point sothere you go look it's a 2010 Mac Miniit's an old one dual core with six Gigamemory six gig gigI just tried to put eight in it and itjust started beeping like I just did notlike it there were matched sticks andmemory where is it it's here somewhereit was here maybe I'll put it back overthere maybe I didn't either man it'sgone it was here disorganized deskanyway so what do we know about it apartfrom that it shares a lineage to behonest not a lot you know we we can wecan certainly look at next step whichwas um Steve Jobs's company in betweenapple stints sure we all know thatum and that was released primarily forthe education Market it's supposed to befor workstations but uh yeah they wereexpensive they were very expensive sothere we go look next step based on theMac kernel developed her blah blah blahum and BSD an implementation of Unixit featured an object-orientatedprogramming framework based on Clanguage the environment is known todayin the Mac world as Coco is it reallydid not know that that's interestinganyway so afterum that happenedApple went along and bought next stepand hence Steve Jobs back and we allknow that story so we're not gonna hashover that I'll keep going down I did notknow that though poor blimey that wouldhave been something else wouldn't itimagine if they'd bought BOS instead ofNext Step that would have beenquite an interesting way I wonder howthings would have been different whathave been quite a strange world we wouldhave been in however they didn'tthey purchase next and we got Mac OS 10and a lot of the stuff that's in Mac OS10 can be traced directly back tonext an open step the beach ball thespinning beach ball of death that wasoriginally from Next Step so there we gothere's all the versionswhat it ran on I will attempt to putVentura on thisit's like it can be done may even do avideo of that I don't know if if there'sany interest in that let me know in thecomments Ventura is the latest it wouldbe interesting to see how it runs onthis Hardware probably badlyum but it is entirely possible so therewe go theit's funny because I always believedthat there was more FreeBSD in Mac OSthan there actually is it's basicallyjust a few utilities anda little bit more where was it I meanthis doesn't really go into much detailsoyou know I might find more informationabout it on the on here see if we canfind outFreeBSD is just Mac OS without the goodbits I debate that there is a a Miss butMac OS is about FreeBSD but Mac OS isjust FreeBSD with a pretty GUI the twooperating systems do share a lot of codefor example most of the use landUtilities in the C library on Mac OS arederived from FreeBSD versionsderived and are the same is not the sameso basically what that means is theytook the FreeBSD utilities and tinkeredwith them for their own purposes whichthe license permits of course and that'sgreat there we go look some of this codeflow works in the other direction forexample FreeBSD 9.1 and later includethe C plus plus stack and compiler thatwere religion originally developed forMac OS major parts of the work done byApple employees Darwin which consists ofthe xnu kernel now if you look at the Uname you would have seen xnuthere is so this is as we can see thereDarwin uh where were me yeah Darwinwhich consists of the xnu kernel i o kita driver modeland posix compatibility via a BSDcompatibility layermakes up part of Mac OS so what you'reprobably find is a lot of the main pagesare BSD so let's check that out let'smanEnvy there you go BSD General commandsso much of the user land not all much ofis in Mac OS lib dispatch lib C pluspluswell written for Mac OS and worked onFreeBSD before any other OS I neverthought I'd say this but thank you Applefor uh the help of development ofFreeBSD I am not a lover of Appleproducts I don't think they fit my needsso I don't use them however here we areso yeah lots of code shared between thetwo os's different kernelsfew other models that are different thedriver model and a few other bits and inall honesty you know Mac OS is apolished operating systemand it will suit some people of courseotherwise Apple wouldn't be the companythey are it's not for me I'm happy withthat decision if you don't use Appleproducts I'm sure you're happy with thatI've said it before I'll say it againuse what is right for you don't letanybody tell you not to don't listen topeople that say oh you must use Applefor professional work and you must useWindows for game it if it works for youit works for you it really is as simpleas that I've said it time and time againand I'm sure there are people that aresick of me saying it so there we go thatis essentiallyfreebsd's relationship to Apple andApple's relationshipthat is essentially freebsd'srelationship to Mac OS and vice versaa lot of code sharing if you like thisvideo please do give it a thumbs up andshare it around very happy for you toshare it everywhere and comment in thethe comment section below we do have adiscount we do have a Discord server itis still going it's very quiet at themoment guys come on get in there and andmix it up and start chatting as always Iwill see you in the next videotake care and have a lovely uh a lovelydaybye bye