Readback Height & Width - Tera Term Ticket #37429 on OSDN

Another way, using the dtterm's window manipulation sequence.

Here is the sample bash script.

#!/bin/bash
die() {
         echo "$@"
exit1
 }
printf"\e[18t"
read -r -t 1 -n 3 resp
[$? -ne 0]&& die "No response"
CSI=$(printf"\x9b")
ESC=$(printf"\e")
case$respin
${CSI}8\;):;;
${ESC}\[8)
read -r -t 1 -n 1 resp
[$? -ne 0 -o "$resp"!=";"]&& die "Invalid Response";;
*)      die "Invalid Response";;
esac
state=0
cols=0
rows=0
while[$state -lt 3];do
read -r -t 1 -n 1 resp
[$? -ne 0]&& die "Invalid Response"
case$respin
[0-9])
if[$state -eq 0];then
rows=$((rows *10+ resp))
elif[$state -eq 1];then
cols=$((cols *10+ resp))
fi;;
\;)[$state -lt 2]&&state=$((++state));;
         t)state=3;;
*)      die "Invalid response";;
esac
done
 echo "COLUMNS=$cols"
 echo "ROWS=$rows"