openmptcprouter-feeds/luci-app-openmptcprouter/root/bin/omr-modemmanager

#!/bin/sh
MODEM_INTF=$1
[ -z "$MODEM_INTF" ] && return
ALL_MODEMS=$(timeout 1 mmcli -L)
for MODEM in $ALL_MODEMS; do
	MODEM_ID=$(echo $MODEM |  awk -F' ' '{print $1}' | awk -F/ '{print $6}')
	MODEM_INFO=$(timeout 1 mmcli -m $MODEM_ID --output-keyvalue | grep $MODEM_INTF)
done
[ -z "$MODEM_INFO" ] && return
PERCENT=$(echo $MODEM_INFO | grep 'modem.generic.signal-quality.value' | awk -F": " '{print $2}')
echo $PERCENT