The difference between Linux output redirection > and >>

> is directed output to a file, if the file does not exist, create a file, if the file exists, it is emptied; generally, when we back up the cleanup log file, it is this method: first back up the log, and then use ' > ', the log file is emptied (the file size becomes 0 bytes);
>> This is to append the output to the destination file. If the file does not exist, the file is created, and if the file exists, the new content is appended to the end of the file, and the original content in the file is not affected.

The difference between Linux output redirection > and >>