I’m on a 64-bit linux machine. When I try to run the 32-bit version of DocPub, it says “No such file or directory”. What’s going on?
Based on your output, it sounds like your 64-bit system lacks the additional libraries required to run 32-bit executables.
Setting these libraries up is a task that will vary by distribution. Here are some links for setting these libraries up on Debian and Ubuntu distributions:
Alternatively, you could simply run the 32-bit executable on a 32-bit architecture.