1960s: MULTICS, UNICS -> UNIX...
1970s: BSD -> Sun OS
1980s: HP-UX, AIX, Xenix, Minix, Solaris
1990s: HP-UX, AIX, Xenix, Solaris
$ git clone https://github.com/ckan/ckan.git
$ cd ckan
$ pyenv virtualenv --no-site-packages ckan
$ pyenv activate ckan
$ pip install -r requirements.txt
$ paster make-config ckan development.ini
$ paster serve development.ini