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There are two main commands in Ubuntu for creating users. I've found them confusing and I always forget which to use when. So, thought to write them down clearly as a quick reference.

 I moved to Windows recently, but still, I need Ubuntu installed in WSL for some of my work. You can enable Ctrl + Shift + C / Ctrl + Shift + V shortcuts for copy/paste. Right-click on the title bar and select Properties from the context menu. In the Options tab, tick the Use Ctrl+Shift+C/V as Copy/Paste option. Click OK. Now, we are good to copy/paste similar to the Ubuntu native shortcuts.

This is to install Docker within Ubuntu WSL without using the Windows Docker application. Follow the below steps. Install Ubuntu 22.04 WSL 1. Enable Windows Subsystem for Linux and Virtual Machine platform Go to Control Panel -> Programs -> Programs and Features -> Turn Windows features on or off 2. Switch to WSL 2 Open Powershell and type in the below command. wsl --set-default-version 2 If you don't have WSL 2, download the latest WSL 2 package and install it.  3. Install Ubuntu Open Microsoft Store and search for Ubuntu. Select the version you intend to install. I'd use the latest LTS version Ubuntu 22.04. Click on the Get button. It will take a couple of minutes to download and install. 4. Open up the installed Ubuntu version that was installed. If you get an error like the below image, make sure to install the WSL2 Kernel update .  If it's an older Ubuntu version the error message would be something like the image below. Error: WSL 2 requires an update to its ...

Issue  I've been playing with a VPN and somehow it messed up my DNS resolution configurations. Chrome gives  DNS_PROBE_FINISHED_BAD_CONFIG  error and can't ping google. So it seemed to be an issue with the DNS. Of course, restarting didn't fix it. I tried DNS lookup which gave me below. To make sure this is somehting to do with my DNS confgis, I ran the same by providing the google DNS servers.  It works, which means my default DNS is not working for some reason. To make sure this, ran the below command. systemd-resolve --status Output has an entry for DNS Servers, which was  ::1 Fix 1. Edit the file /etc/systemd/resolved.conf. sudo vi /etc/systemd/resolved.conf 2. Add new DNS entries. I added 2 google DNS and the cloudflare DNS sever. [Resolve] DNS=8.8.8.8 8.8.4.4 1.1.1.1 3. Restart the systemd-resolved and check the configuration is persisted in /run/systemd/resolve/resolv.conf file. sudo service systemd-resolved restart cat /run/systemd/resolve/resolv.co...

Ubuntu MySQL ERROR 1698 (28000): Access denied for user 'root'@'localhost'  This is a quick note about MySQL root access error in Ubuntu even though the password is correct.

If you are downloading a file with the wget command, sometimes you may need to pause it and start it back from the place where you paused rather than starting from the beginning. So you don't have to re-download the entire package. Wget can do this just like downloading from a web browser. Let's say I need to download a file from the web. So I'm using the wget command as follows. Download wget <url for the file> Pause To pause the download just hit ctrl + c  the shortcut to terminate the current command. Continue This is going to be the same command but -c switch to continue from the previous download. wget -c <url for the file> Simple as that! Yeah, you can download from a web browser, but this is more fun and easier 😋 If you are lazy like me, wget saves a couple of clicks.

In older Ubuntu versions, you could have just right-clicked on the Ubuntu Terminal window's title bar and set any title you would like. But unfortunately after Ubuntu 18.04 LTS this feature is gone. I used to love this feature because I'm multiple tabs in the single terminal window kind of a guy. I usually like to work in multiple named terminal tabs like below. By default, in newer Ubuntu version, it is showing just the current directory. Let's see how we can do this. Ubuntu prompt In ubuntu's Bash, there's an environment variable $PS1 which is responsible for the details that the command line prompts. You'll be able to echo this and see what's inside it. If I echo it it will print something like this. echo $PS1 \[\e]0;\u@\h: \w\a\]${debian_chroot:+($debian_chroot)}\[\033[01;32m\]\u@\h\[\033[00m\]:\[\033[01;34m\]\w\[\033[00m\]\$ If you really want to understand what this means, you can refer this page .  Updating the termina...

Not many of us are using 3G/4G dongles these days, but I had to for some reason. I have a Windows 10 host and a Hyper-V VM Ubuntu guest OS. Problem: Having a connection issue from the guest OS when a dongle is used. Each time I connect through the dongle, guest OS loses outside connectivity. (It works fine if I use Wifi) Fix: In your windows machine, open Control Panel Go to View network status and tasks Click on Change adapter settings Right-click on your dongle connection. Select Properties in the right-click context menu Go to Sharing tab Check Allow other network users to connect through this computer's Internet connection Use VEthernet (Default Switch) in the drop-down list (If your VM uses some other switch, use the proper connection) Hit OK. It should work now. If it still doesn't, disconnect and reconnect your VM's network connection from the VM itself.