Yes, just upload via GUI, But you may wait for a wait until it is more stable. It has a lot of upgrade recently, including GSM modules support? For the GUI Dyndns, it is not working via remote but I need to do more testing in my LAN environment.
the script should be something like this
exec date >> /persistent/etc/test.dat
It should put into /persistent/etc/config/crontab
# /etc/config/crontab
# uncomment line below to test, see uClinux-dist/cron/README for
# more information. Note no shell is available, so u can't do
# things like /bin/echo hello >> /tmp/test, but you could always
# start a shell script to handle anything fancy.
You may check your existing content in /persistent/etc/config/crontab and the associated scripts to revise your non-functional scripts. It may just be calling to an incorrect shell and not in the right position.
In fact, thanks a lot. I believe that switchfin will get more support as compared to ATCOM one. I may switch to switchfin later if I have the searial port.