I have a permission error on a command run from script or from ssh
/ip/accounting/uncounted/get bytes
not enough permissions (9)
This works fine for all 6.xx version.
Some other command is missing on x86 7b2:
:put [/system routerboard get model]
bad command name routerboard (line 1 column 15)
This works fine same X86 virtual server running 6.xx, just not giving any information since its not a router board.
I have not found a way to simple test a command if it exists or not to prevent script from failing.