linuxCpuMemoryIpChecker.sh

# CPU temperature
read temperature < /sys/class/thermal/thermal_zone0/temp
printf "CPU:\t%s °C\n" $(($temperature/1000))

# Memory pressure
memtotal=0
memfree=0
while read -r name value unit; do
        if [ "${name}" == "MemTotal:" ]; then
                memtotal=${value}
        fi
        if [ "${name}" == "MemFree:" ]; then
                memfree=${value}
        fi
done < /proc/meminfo

mempercent=$(( 100 - $memfree * 100 / $memtotal ))
printf "Memory:\t%s %%\n" ${mempercent}
printf 'Total:\t%s MB\n' "$(( $memtotal/1024 ))"
printf 'Free:\t%s MB\n' "$(( $memfree/1024 ))"

# IP Address (primary)
addr=$(ip route get 8.8.8.8 | head -1 | cut -d' ' -f7)
printf "IP:\t%s\n" "${addr}"