I'd like to use script, where will be some command separated on more physical lines. In mikrotik shell it works without any problem by using backslash "\" character on end of line.
When I use this command in mikrotik shell, it works ok.
But when I create script file on linux, called for example "test.rsc" and then I try to start it remotely by "plink user@ip -m test.rsc", then I receve two "syntax error" messages from mikrotik. When I don't use joined commands (one command = one physical line), it works without any problem.

Remember to have the correct encoding. You will find the same problem if you write a script (a long line of letters) in notepad, copy it and paste.