made changeport work

custom_bin/changeport

@@ -1,16 +1,27 @@
-echo "\nChanging ESPPORT\n"
-echo "TTY devices found in dmesg:"
-COUNTER=0
-devarr=()
-for line in $(dmesg | tail -50 | grep -o -E "tty[A-Z]{3}[0-9]{0,2}" | sort -u); do
-                echo "$COUNTER  /dev/$line"
-                devarr+=("/dev/$line")
-                COUNTER=$((COUNTER+1))
-done
+subprocess() {
+    echo "\nChanging ESPPORT\n"
+    echo "TTY devices found in dmesg:"
+    COUNTER=0
+    devarr=()
+    for line in $(dmesg | tail -50 | grep -o -E "tty[A-Z]{3}[0-9]{0,2}" | sort -u); do
+                    echo "$COUNTER  /dev/$line"
+                    devarr+=("/dev/$line")
+                    COUNTER=$((COUNTER+1))
+    done
+
+    echo "\nEnter TTY Number You'd Like:"
+    read tty
+
+    sel=$tty+1
+    eval "$1=$devarr[$sel]"
+
+    return 0
+} 
+
+ret=''
+subprocess ret
+
+export ESPPORT=$ret
 
-echo "\nEnter TTY Number You'd Like:"
-read tty
-ttyselect=$devarr[(($tty+1))]
-export ESPPORT="${ttyselect}"
 echo "\nESPPORT set to ${ESPPORT}\n"
 echo "\nall done :3\n"