When we want to launch the developed application to the Google Play store, we often need to use keytool that provided by Java, to generate, import, and export certificates. By default, keytool will create a keystore file in its execution directory. (but you can change the output location)
Read More »[Solved] keytool: command not found
We often use the SnackBar message component in Flutter Apps to display the remind messages.
Read More »[Flutter] How to Create SnackBar Message Component Recently, I configured the Android Studio on Linux system for Flutter development, but I encounter the following error when using flutter doctor --android licenses command (It’s necessary).
Many people are troubled by the beeping sound when use tab key to auto-complete command.
There are two types of beeping sounds, one is emitted by speaker or stereo, and other one is emitted by the host hardware device.
Read More »[Solved][Linux] add-apt-repository: command not found“add-apt-repository: command not found” is a common error about command not found, but we cannot complete it with
search add-apt-repositoryorapt install add-apt-repository.In fact, we need to use
sudo apt install software-properties-commonto install.
Recently I reinstall my Linux operating system. In the process of installation, I disconnected to my Wifi device. But before I reinstall it, the device connected to Wifi is very successful.
Read More »[Solved][Linux] No Wi-Fi Adapter Found – Make sure you have a Wi-Fi adapter plugged and turned on Today I reinstalled Debian that is a famous Linux distribution, but I got an warning to remind me the device cannot detect the Wifi device in installation… I always encountered some new problem every time I install the system.
Read More »[Solved][Linux] Use APT Command Error in New System: “Media change: please insert the disc labeled …”
Today when I configuring a new environment on new device (use pip3 install PyQt5), I got the following error message:
If you want to install another Linux distribution on Linux, sometimes we make the USB bootable flash drive with UNetbootin tool.
Read More »[Solved][Linux] UNetbootin Have No GUI on Gnome Environment 
ModuleNotFoundError: No module named 'distutils.util'