That’s exactly what I was about to write, @andreas-doehler. The script’s full name is ~/share/check_mk/notifications/sms
.
I’m not sure if this is neccessary, but in the copy below ~/local/...
I suggest changing the 2nd line from
#!/usr/bin/env python
# SMS (using smstools)
to
#!/usr/bin/env python
# 80 character SMS (using smstools)
(or something similar) to be able to distinguish it from the original script in the GUI.