What the “~” at the end of file extensions mean
In: Technology
The symbol is called a “tilde” and it usually indicates that a file is created by a program as a backup. For example you might open a text file and perform edits on it which the program wants to periodically save to file in case the program crashes, but it also doesn’t want to overwrite the original file until the user tells it to. Instead it could create a new file with the same name as the original except adding a tilde to indicate that it is a backup of in-progress edits to the original file.
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