Python – How to correctly launch a python application in the Mac OS X dock

Use the dscl command. This example would create the user "luser", like so:

dscl . -create /Users/luser
dscl . -create /Users/luser UserShell /bin/bash
dscl . -create /Users/luser RealName "Lucius Q. User"
dscl . -create /Users/luser UniqueID "1010"
dscl . -create /Users/luser PrimaryGroupID 80
dscl . -create /Users/luser NFSHomeDirectory /Users/luser

You can then use passwd to change the user's password, or use:

dscl . -passwd /Users/luser password

You'll have to create /Users/luser for the user's home directory and change ownership so the user can access it, and be sure that the UniqueID is in fact unique.

This line will add the user to the administrator's group:

dscl . -append /Groups/admin GroupMembership luser

You'll need to prepend the /opt/subversion version in the shell's path to have the environment prefer the new version.

The software's README states:

Installation Notes

<snip>

Once installed, you will need to prepend /opt/subversion/bin to your PATH environment variable.
This can be done a multitude of ways but an easy one is to add the following to the end of /etc/profile or ~/.profile:

export PATH=/opt/subversion/bin:$PATH