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Where can I find an explanation of directory names used in Ubuntu (the whole tree)?

  • Why etc?
  • When do I put my files in /usr/local when in /home/usr when in /usr/local/bin and when in /var/lib/ or /bin?

Is there any rule, that tells when I have program x, it for sure must be placed here, and it's config files are here and data there.

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up vote 4 down vote accepted

The questions you're asking are answered in the hier(7) man page. See for an online version.

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