a=4
read -t 2 a < /dev/tty
-echo $?
+estat=$?
+if [ $estat -gt 128 ]; then
+ echo timeout 1: ok
+else
+ echo $estat
+fi
echo $a
sleep 5 | read -t 1 a
-echo $?
+estat=$?
+if [ $estat -gt 128 ]; then
+ echo timeout 2: ok
+else
+ echo $estat
+fi
echo $a