Hi David,
Did you put the path to your installation directory in front of bdp.sh? You may need to type the full path to the correct location of your bdp.sh file. For example, my BrainSuite is located in the Applications folder. To execute bdp.sh, I type:
/Applications/BrainSuite15c/bdp/bdp.sh
in the terminal.
Can you give this a try? Please let me know if this doesn’t solve the problem.
Best,
Yeun