Run the linux Command Line program out of the command line background

In the Linux Command Line, it is easy to run the command line program in the background. Just add an & after the command, for example, start fcitx and run it in the background: fcitx &

But even so, the program will exit after the command line is closed (fcitx does not seem to exit, somehow)

We can use the nohup command to close the command line program and continue running. Method: nohup <command> &, such as nohup fcitx &

This is helpful for users who like quake terminal :)