SHELL

ubuntu

# For Desktop 
https://ubuntu.com/download/desktop

# For Server
https://ubuntu.com/download/server

ubuntu

+--------------------------------------+
| wifi drivers realtek 8852 for Ubuntu |
+--------------------------------------+
  
Install this tools with the following command

sudo apt-get update
sudo apt-get install make gcc linux-headers-$(uname -r) build-essential git
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Installation

git clone git://github.com/lwfinger/rtw89.git
cd rtw89
make
sudo make install
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sudo modprobe rtw89pci
if Not work --> operation not permitted This is because of SecureBoot enabled in your OS
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mokutil --sb-state
sudo mokutil --disable-validation

Now enter a temporary password between 8 to 16 digits. We will use this password later. 
Enter the same password again to confirm. 
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Once it’s done reboot the system and press any key when you see the blue screen 
(MOK management). 
Select Change Secure Boot state. Enter the password letter by letter you had selected before and press Enter. 
Select Yes to disable Secure Boot in shim-signed. Press Enter key to finish the 
whole procedure. 
After reboot, run "sudo modprobe rtw89pci" again

ubuntu

#set python as python3 in ubuntu 20.04
sudo apt install python-is-python3

Ubuntu

First you have to find the .desktop file for JDownloader.
You can do so by checking these folders:
1. ~/home/${USERNAME}/.local/share/applications (If you are unable to find .local press Ctrl + H to unhide Hidden files.
2. ~/usr/share/applications
3. It will appear in Your Desktop if you installed JDownloader manually (not by snap).
 NOTE: The file might have different names like install4j_105m6n-JDownloader2 but it will always carry JDownloader in its filename
Now open .desktop file of Jdownloader in Text editor.
(If you are on Desktop then right click and click on "Don't allow launching". You will be able to open the file.)

Now open JDownloader (Ignore that it opens in a separate window)
Hover over the icon of JDownloader in Dock (Taskbar). You will see some text (In my case it is Jdownloader).
Go to your .desktop file and write that text in "StartupWMClass" area
Save the file and your work is done.
If you edited the file on your desktop, Copy the .desktop you edited and paste it in
any folder mentioned above in 3 and folder. 
NOTE : Paste it in one folder only or two shortcuts will appear if you paste in both.
Have a nice day.

ubuntu

sudo yum install -y yum-utils 
  device-mapper-persistent-data 
  lvm2

ubuntu

git config --global color.ui true
git config --global user.name "YOUR NAME"
git config --global user.email "YOUR@EMAIL.com"
ssh-keygen -t rsa -b 4096 -C "YOUR@EMAIL.com"