 and welcome again this video is part of a series so check out the link in the description for the full playlist or hopefully at the end this video there'll be a link to the full playlist if you're watching the playlist and you get to one that is not currently available that's because it hasn't been published yet and it will be in a couple of days I do thank you all my patreon supporters who support me and have gotten this video early and today we're gonna be looking at the programs we just recently looked at which is the mini modem and the morse for morse code and so we also looked at the psk 31 applications which we're going to applications but one of the nice things that you do is I could type and as I typed it sent the message out audibly so I could be basically chatting with someone over the airwaves can we do that with these two programs in the shell the answer is yes using a command called MKFIFO which allows you to create a file that you can real-time read from as stuff is going into it so I'm gonna do is I'm gonna create a file here I was called MSG for message not for the stuff that's in Chinese food okay so now that file is created so what I can do now is I can cat that file even though it's empty I can cat it into one of our programs like Morris so I hit enter and Morris is now sitting there listening now in a separate shell so down here what I'm gonna do is I'm gonna say cat and are greater than symbol into MSG so what it's gonna do is it's turning cat into a text editor so I can put text into that file real-time so I'm gonna hit enter so now anything I type in the bottom line is gonna be transmitted out but it doesn't transmit till I hit enter which is nice because you can go back and fix mistakes and you're typing unlike the other applications where it's real time as you type they go out this as I type once I hit enter it sends out what I've typed so I can say hello world again Morse code is kind of slow I'm gonna test this out and I can say goodbye and when I'm done I can control C to get out of that and if I was to cat out MSG now you can see it's still there's nothing in there because we didn't actually put anything in that file it's just waiting for information coming in as it comes in it goes out so what I'm gonna do now so I believe that's what MKFIFO stands for is make in file out file I've always assumed I've never actually looked it up so but you can do the same exact thing with mini modems so I can say cat MSG into mini modem dash dash transmit at 110 we'll say and I come down here and I can say cat into MSG and I can say hello world you can see it's a lot faster than the Morse code again test this out goodbye and I can make control C to X and out in both programs close when I do that so again let me show you that real quick and you know if you have mini modem running as a trans as a receiver on your machine right now you can actually grab the audio that I'm playing through here if it's clear enough again I'm recording this through a microphone but you should be able to decode that but there we go running it again and I just want to show you again I can say hello blah blah oh go back and fix that world sometimes mini modem seems to be a little staticky when it first goes through let's try that again there that's better this test there we go it's a little bit better yeah sometimes mini modem when it first starts transmitting it seems to be a little staticky you tend to lose those first few characters but once you start transmitting it seems to go away but yeah I just want to show you that you can backspace and make changes so that's it so now you can sit there and in your shell type and communicate with someone back and forth you can have a shell that's transmitting a shell it's receiving and a shell where you are typing and of course everything that's being since we're using a shell you pipe everything that comes in either into a file or into another program that will filter it somehow but that's typing somewhat real-time it's not exactly real-time because it's not as you press the keys but basically as you type you hit enter and it sends so again we're gonna be looking more at at these programs especially mini modem as we develop some software here to display things in a nice format so thank you for watching please visit films by chris.com that's Chris the K there's a link in the description also think about supporting me over at patreon.com patreon.com forward slash milix 1000 I do thank you for watching if you do like these videos be sure to like share subscribe and comment those things help out a lot I thank you for watching as always I hope that you have a great day