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Er..I know how to clean the cache , and I have tried. The problem is , as I post in #1 , the total space of ubuntu was only 8.1G since the temp...
Thanks for your answer , but it didn't work. This trash was created by Firefox download temp file, not the ubuntu packages.
Hello, I accidentally click the cancel button when I was downloading a 22G file via firefox, and it have already finished 20G at that moment. As I...
