A script to determine GPU and its RAM under Linux

# A bash script to determine GPU and its RAM (under Linux)
# Prerequisites: bash, sed, awk, lshw
# (c) 2010 Artem S. Tashkinov. Licensed under GPLv2 :)

#! /bin/bash

if ! lshw -version &> /dev/null; then
        echo "Please, install lshw utility"
        exit 0
fi

ramregions()
{
        ram=`sed 's/(prefetchable)//g' | awk '{for (i=1;i<=NF;i++) if ($i ~ "memory") print $i}' | awk -F : '{print $2}' | tr a-z A-Z`
        echo -e "ibase=16;\n$ram" | bc | awk '{sum+=$1}END{print (0-sum)/1024/1024"MB"}'
}

cpu2gpu()
{
        if echo "$@" | grep -q "Core Processor"; then
                echo `grep "model name" /proc/cpuinfo | head -1 | awk -F : '{print $2}' | sed 's/[ ]\{2,\}/ /g;s/^ *//;s/ *$//'`" Integrated Graphics"
        else
                echo "$@"
        fi
}

outfile=`mktemp` || exit 1
lshw -class display -disable dmi -quiet &> "$outfile" || exit 2

cat "$outfile" | while read a; do
        case "$a" in
                *product:*)
                        gpu=`echo $a | awk -F 'product: ' '/product:/ {print $2}'`
                ;;
                *memory:*)
                        ram=`echo $a | ramregions`
                ;;
        esac
        if [ -n "$gpu" -a -n "$ram" ]; then
                gpu=`cpu2gpu "$gpu"`
                echo "GPU: [$gpu] RAM: [$ram]"
                unset gpu
                unset ram
        fi
done

/bin/rm $outfile