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https://blog.offline-net.com/2011/08/19/ubuntu-6-10-bash_profile-%e3%82%92%e6%9c%89%e5%8a%b9%e3%81%ab%e3%81%97%e3%81%9f%e3%81%84/
Ubuntu 6.10 : .bash_profile を有効にしたい