(SOLVED) Create a variable based off of $HIP?

[chase2110]

I want to create a variable called $CACHE that copies the $HIP path but replaces the drive letter from C: to X:. I know I can set variables in the environment file but I'm not sure how to do it for this or even if that's the right way.

 

Any help would be appreciated.

Edited August 28, 2020 by chase2110
solved

[chase2110]

I figured it out. Just posting in case anyone else is trying to do something like this.

I created a file called 456.py and placed it in in my $HOUDINI_USER_PREF_DIR in a folder called scripts. This file gets run every time houdini opens a .hip file. Inside the file I used this as my code:

import re

CACHE = str(hou.expandString('$HIP'))
CACHE = re.sub('\AC:|D:', 'X:', CACHE, 1)
hou.hscript('setenv -s CACHE=%s'%(CACHE))

It copies the hip path

Searches the beginning for C: or D: and replaces it with X: 

Then sets the environment variable.