How to clear the current command line in Linux or Mac terminal?
For example, if you typed a bunch of instructions wrongly, and you want to clear them,
Be sure to do the same as I used to, use the reverse key to kill slowly, we can use ctrl+u
Remove the entire command line directly.
If you press ctrl+u to delete the entire line command,
If you want to restore , you can press ctrl+y .
Not sure who will use it, but I encountered it myself, because my home is a floating IP. A software I installed cannot detect that the ppp0 network card is an external network, so changing the name can trick him into successfully installing it.
If we have changed some files, how to find out through the command line?
There may still be some old programs in some places, which can only run the old system. But you want to be able to execute and install some desired packages, you may try this method. Please note that if this system is important to you, please evaluate it yourself. It is recommended that you have a Docker environment and have a backup image before trying it.
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