Guide : Auto removal of downloads from transmission 2.82

You are using BusyBox which does not support the full command set for the  cut  utility.

Change this line:

TORRENTLIST=`transmission-remote $SERVER --list | sed -e '1d;$d;s/^ *//' | cut --only-delimited --delimiter=" " --fields=1`

to this:

TORRENTLIST=`transmission-remote $SERVER --list | sed -e '1d;$d;s/^ *//' | cut -s -d " " -f 1`

All you are doing is replacing:

--only-delimited --delimiter=" " --fields=1`

with the busybox equivalent

-s -d " " -f 1`

Hope that helps!