I believe those are arguments passed to read. It's pretty useless, I'll delete them.

All those errors make me think of something... What OS are you running ? This is supposed to be run in BT5-arm. Of course it can be runned under something else, but you may have compatibility issues : using ash instead of bash, things like that. That would explain the -e argument not being recognized, but also the different path errors, and file readability.

Those having problems with reading a file, I'd need more detail about what's going on :
- Does the file exist ?
- What are its permissions ?
- Can you cat <file> it ?
- Grep/egrep ?