I moved the topic here from the forum at
Regarding "bleachbit --user xyz" you can try this command
HOME=/home/bob sudo bob bleachbit.py --delete firefox.cache
When run as root, that changes the HOME variable to /home/bob, changes to the
user bob, and runs the command.
Thanks for the suggestion. I hadn't got round to trying out the CLI until now.
I set up a shell script as follows:
bleachbit --delete evolution.cache