What could the problem be, if i am not able to clone something from Github? - github

Right now I am programming an i2C script to read some pH data from a sensor at work whatsoever. I need to clone something from GitHub but it always says that the server certificate verification failed. When I wanna visit GitHub.com via Chromium it says it has an insecure connection to this site. I can ping the page but neither open it in the browser nor clone something from there. I am using a Raspberry Pi 3B with the newest Raspbian version with a working internet connection via Ethernet (or WiFi, neither creates a problem with any website). My workplace gave me a Certificate to install, if I want to use something else then Microsoft Edge. My thought was, that it is needed on the Raspberry Pi too, but I´m just not able to install it. I´m new to Raspbian programming and I have tried my best to understand the internet forums but I´m at the end of my knowledge. Does somebody know what to do? Or what to change?
Thanks for every answer
Matteo

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ERR_CONNECTION_RESET in Log(main) on startup

Came back to VS Code after a while and I'm met with the following error in Log(Main):
[error] Error: net::ERR_CONNECTION_RESET
at SimpleURLLoaderWrapper.<anonymous> (electron/js2c/browser_init.js:109:7068)
at SimpleURLLoaderWrapper.emit (events.js:315:20)
In the bar at the bottom it says: Internet not connected or can't connect to GitHub. In the Recommended box under Extensions it says We cannot connect to the Extensions Marketplace at this time, please try again later.
Firefox, Chrome and Edge can connect fine as can VS Code on a XUbuntu Virtualbox on the same machine, but I am having similar problems with Discord and Signal Desktop: failed connections due to ECONNRESET errors. The only thing I've found in common so far is that all 3 are Electron apps. Signal, just like beta versions of Discord I tried, only managed to connect once.
Things I've tried:
disabling ExpressVPN/Windows Firewall/Kaspersky AV (free)
full scan with Kaspersky and MalwareBytes
changing DNS settings from automatic to Google to CloudFlare
ipconfig release-renew-flushdns-registerdns
netsh winsock reset
windows system file checker
reset home network
I logged the issue on VS Code GitHub but they sent me here so I'm hoping someone can help me with this. Been losing my mind on this for days now and really hoping to avoid a fresh install.
Edit1: I just tried safe mode with network and all problems seem to be solved. Not sure what this points to though... Faulty drivers, some conflicting startup service or program?
Well I feel like a fool..
Turns out I didn't completely shutdown Kaspersky..

Setting up Github with an used Macbook

I recently used my wife's MacBook (I have a desktop in my office, but since the university is closed, I am not allowed to go there.) This Macbook was used to set up AWS before. In particular, some ssh keys were created.
Recently, I am trying to set up Github. All the guidelines on the internet seem to suggest that we have to start from the beginning. As a consequence, I am having a hard time setting up Github.
I am a completely new user of Macbook. I wonder whether it is possible to reset everything on my wife's Macbook so that I can set up my Github connection?
I am sorry if my question is too silly. Thank you for your help!
You should first install git using one of the following methods. Then you can use command line arguments to clone a desired repository or perform whatever action you need. If you are not comfortable using the command line to manage your project with git, then you can install GitHub Desktop to obtain a convenient UI for managing the project.
Not sure if this is what you meant by "setting up GitHub" but hope it helps. Let me know if there's anything else I can help with.

connecting Darwin Caldav to thunderbird calendar

I am a newbie to caldav and server setups and need some specific, detailed help from anyone who knows Darwin caldav.
I installed Darwin caldav server onto my iMac w/ Maverick. I have it up and running in the background. After some fiddling I connected iCal and my iphone to it and they are exchanging info regularly.
I am now trying to connect my Thunderbird calendar to it. When creating the connection, Thunderbird calls for Location. No matter what I enter (comp ip with portals, http foramt of same) Thunderbird won't connect.
I was able to connect through iCal, entering the computer's ip address, 192.168.1.19, but in Thunderbird this address doesn't work. I enter it as a web location, http://192.168.1.19, but still no connection.
Would someone explain how Darwin caldav is spoken to, connected to, what Thunderbird is looking for as far as location, and what I should be entering? As I said, I'm a newbie to this some I would appreciate some explanation of why I would enter things as given, not just what to enter.
Also, while installing Darwin caldav I read that once installed I would connect using a web browser. Is there a separate way to connect to D-caldav directly using some kind of built in gui, or was this just a reference to connecting to it as I am already doing, using a calendar and a web connection?
Thanks.
Thunderbird doesnt seem to support collection discovery (calendar-home), so it needs to be pointed directly to a calendar collection.
According to some other guidelines (e.g. here: http://sabre.io/dav/clients/thunderbird/ or http://oxpedia.org/wiki/index.php?title=SetUpThunderbirdLightningCalDAVClient you need to find out for your server the absolute url to an calendar instead pointing like other clients to the root folder of the server.
http(s)://[domain]/[pathtocalendarfolders]/[username]/[calendarname]/
Hope this helps a little bit.
Best Regards, Hilmar

Raspberry Pi provider for Vagrant?

I'm currently evaluating Vagrant, and so far I really like what I've seen. As per default Vagrant uses Virtual Box as VM, but can also use other local or remote targets, as long as there's a provider for it, e.g. VMware or Amazon.
Now I'd like to use Vagrant to deploy a VM to a Raspberry Pi. Is this possible?
I know that in the end this means I need to run some kind of virtualization on the Pi (and it's a definitely reasonable question whether that's a good idea at all, but I'm curious).
Is this possible? If so, how?
Please note that I first asked this on ServerFault, but the question does not fit there, as they don't see RasPis as "real" servers … hence I am re-asking the question here.
One possible route would be to use Vagrant to manage the state of the image locally, and then use qemu-img to convert the vmdk to an img file and flash that to the SD card.

How to setup a ubuntu server that can receive iOS ASIHTTPRequests

I have a ubuntu PC that I don't use for anything and I already know how to submit ASIHTTPRequests from an iPhone.
I would like to setup a very basic system where I can send an image from iPhone to my Ubuntu server and have my server just save that photo to a specific folder on my Ubuntu PC.
I have ZERO server knowledge but from what I have heard, this shouldn't be too terribly difficult to implement. Does anyone know of an easy way to do this? (Easy for someone with no server knowledge?)
Any web server will do. https://help.ubuntu.com/6.06/ubuntu/serverguide/C/httpd.html