So many questions~~~ ;)
Don't give up, only by solving problems can you gain experience.
Partial answer to the question:
1. I can’t watch it because there is no sound? What about other players? Recommend mplayer/mpv
2. Virtualbox driver needs to be installed, try it first
apt-get install dkms
3. oracle jdk https://launchpad.net/~webupd8team/+archive/ubuntu/java
4. Unable to obtain the package. After all, we and foreign websites need to go through gfw. You can try downloading the zip package and then installing it
vlc cannot play videos normally. Is there a decoder missing? You can start vlc from the command line, so that the command line will leave a lot of information to determine where the problem is.
Eclipse can be downloaded directly from the official website. As long as java is installed, it can run.
Dependence means that if you lack something, you can’t do anything. For example: If a man lacks a woman, you can’t have children (some people will be more serious)
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
So many questions~~~ ;)
Don't give up, only by solving problems can you gain experience.
Partial answer to the question:
1. I can’t watch it because there is no sound? What about other players? Recommend mplayer/mpv
2. Virtualbox driver needs to be installed, try it first
apt-get install dkms
3. oracle jdk
https://launchpad.net/~webupd8team/+archive/ubuntu/java
4. Unable to obtain the package. After all, we and foreign websites need to go through gfw. You can try downloading the zip package and then installing it
Life is short, I use arch.