Why patching path? (Installation)

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Hi.

I just installed a fresh copy of Linux Mint and then unpacked the sage *.bz2 in my user directory. Then gave the command: ./sage and then the following appears:

patching / home / username / file * etc etc etc and the process takes HOURS!

I remember I have installed previous versions and after a few seconds, was ready to run the notebook () command.

What has changed? I found no information about it. Am I doing something wrong?

Thanks in advance.