Comment 5 for bug 1876331

It’s not expected of course, but we tried to stick to POSIX syntax to avoid breakages.

However, reading https://pubs.opengroup.org/onlinepubs/009695399/utilities/echo.html, it seems that escape sequences in echo are not POSIX: "It is not possible to use echo portably across all POSIX systems unless both -n (as the first argument) and escape sequences are omitted." and that we should rather change those echo by printf. We’ll fix it this way, thanks!

Note that changing sh by bash slows down drastically the boot experience and it should rather be PyBOMBS to fix their scripts to either requires bash and be dash compliant.