The test runner answer:
[tester::#MG5] Running tests for Stage #MG5 (Locate executable files)`
[tester::#MG5] [setup] export PATH=/tmp/owl:$PATH
[tester::#MG5] [setup] export PATH=/tmp/cow:$PATH
[tester::#MG5] [setup] export PATH=/tmp/ant:$PATH
[tester::#MG5] [setup] PATH is now: /tmp/ant:/tmp/cow:/tmp/owl:…
[tester::#MG5] [setup] Available executables:
[tester::#MG5] [setup] - my_exe
[tester::#MG5] Running ./your_program.sh
[your-program] $ type cat
[your-program] cat: not found
[tester::#MG5] ^ Line does not match expected value.
[tester::#MG5] Expected: “cat is /bin/cat”
[tester::#MG5] Received: “cat: not found”
[your-program] $
[tester::#MG5] Assertion failed.
[tester::#MG5] Test failed