Installing is mostly a matter of executing a self-installer package or unpacking it to some folder. Blender has a minimum of system dependencies (like OpenGL and SDL), and doesn't install by overwriting libraries in your system. There are also some extra files needed for a good install, like an antialiased font and standard python scripts, but these are optional. Typically these will go to your HOME/.blender/ directory. Below you find instructions for it per OS.
Windows: the .exe installer handles registry of file types for you. The .zip download has a .blender directory included, which can be manually copied.
The directory .blender is located by Blender while checking the following list:
- whether environment variable HOME exists,
- or, if environment USERPROFILE exists, and the installer has created there the Application Data\Blender Foundation\Blender\ directory,
- or it uses the .blender directory from the installation directory (where blender.exe resides)
Also note that Blender comes with two dll files, which have to reside next to blender.exe.
Linux, FreeBSD, Irix, Solaris: after unpacking the distribution, you can copy the .blender directory from it to your home directory.
OSX: the .blender directory is in Blender.app/Contents/Resources/. This is being located by default. If you like to alter some of the files, copy this directory to your home dir.
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