By default, Movable Type looks for the NetPBM tools in three locations: /usr/local/netpbm/bin, /usr/local/bin, and /usr/bin. If your NetPBM tools are installed in a different location, you can adjust the NetPBMPath configuration setting. Note that this path should be the path to the directory containing the NetPBM binaries; for example, if your pnmscale binary is at /home/foo/netpbm/bin/pnmscale, you should set the value of NetPBMPath to /home/foo/netpbm/bin.

Default value: any of the above three locations

Example:

    NetPBMPath /home/foo/netpbm/bin