From I got from comaX today is that the script should be completely functional with ash now ( so no need for bash ). However when I run it with ash I get errors in the new dependency part of the script:
ash: unknown operand

and gives a false positive for missing dependencies (no such thing happens when run as bash)

Moreover, after using chmod +x on it the script still returns permission denied when run as ./mitm_pcsci3nce.sh.

I will try putting the script in /usr/bin now and running it directly and see what happens.


EDIT:

This works. Script can be started after chmod +x in /usr/bin by simply issuing mitm_pcsci3nce.sh in terminal. However, it still returns:
ash: unknown operand
and claims I have unmet dependencies (despite all showing success)

EDIT 2:

So until figuring out why this happens with ash, bash will still be required. ( first line of the script should link to /bin/bash, not bin/ash)