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.
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Sometimes it is necessary to generate an ssh key pair for automatic configuration. There is no password query in the command line, and an ssh key pair is generated.
This page describes how I removed the old version of Linux Kernel taking up space on ubuntu.
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