Environment Variables

The MLTK uses the following optional environment variables:


This should be a list of directory paths to search for MLTK models.
Each directory path should be delimited with the OS’s path delimiter

  • Windows - Semicolon ;

  • Linux - Colon :

See Model Search Path for more details.


Specify the directory path to the MLTK’s cache directory.
If omitted, the MLTK defaults to the directory: ~/.mltk


Set this variable to 1 to indicate that the MLTK is running on a “read-only” file-system.
This is useful if te MLTK package is running in a cloud “lambda” function.

When set, the MLTK will only write to the OS’s temporary directory.