Hi tomt,

If you have installed an x terminal you can try :
tail -f filename

this is not really for a file that is updated, but for one on which lines are being added at the end (like for a log file)

tail shows only the last 10 lines when called (and then with the -f option all the lines added afterwards). If you want a larger number of initial lines try:

tail -f filename -n numberoflines

I haven't tried it on my 770 as I don't have it here, but it runs busybox and I have tried it out on my ubuntu's busybox so it should work

hope it helps

Carlos