openwrt list packages and used space code example

Example: openwrt list packages and used space

#!/usr/bin/awk -f
BEGIN {
        D="cd /overlay/upper/usr/lib/opkg/info&&"
        C=D"ls *.list"
        S="sort -n"
        while(C|getline>0) {
                P=substr(F=$1,1,length($1)-5)
                J=D"du -sk $(cat "F")"
                s=0
                while(J|getline>0) {
                        s+=$1
                        t+=$1
                }
                close(J)
                print s"\t"P|S
        }
        close(S)
        print t"\t---TOTAL---"
}