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Installing python3 on MacOSX

After downloading and installing python3 from original dmg package just add to ~/.bashrc or ~/.bash_profile alias:

alias python=/usr/local/bin/python3.2

And restart the Terminal.

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Unlock multiple files on Mac OS X

If you can’t somehow modify file even as root in Terminal it means that file is locked. To unlock single file ‘Get Info’ in Finder and on general tab just uncheck tick ‘Locked’. To unlock multiple files you can use

chflags -R nouchg *

in Terminal.

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