Linux uses cp command to force override function.

When we usually use cp command in Linux, when copying files from one directory to another, if there is a file with the same name in the directory, you will be prompted to enter y to confirm whether to overwrite the file with the same name.

It doesn't matter if there are fewer documents, but if there are many documents, it is simply too tired to confirm them one by one. To make matters worse, even if we add the -rf parameter, we will still get a prompt.

Why is this happening?

The reason is that the cp command is an alias of the system.

We can check:

In other words, the cp command we usually use is actually cp -i I.

What does the -i parameter mean?

Just give a hint before covering, which should be regarded as an insurance measure of the system.

What if you want to forcibly copy and don't want to enter y one by one?

Use native commands:

Cancel alias:

So when you use cp -rf again, you won't be prompted to confirm.

However, it should be noted that after use, remember to restore the alias.

The first method is recommended here, because the command is simple and there is no risk of forgetting to restore the alias.

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