( locsemege | 2011. 11. 22., k – 11:52 )

A releváns rész:

ipurl=('http://whatismyipaddress.com/' 'http://www.ip-adress.com/' 'http://www.whatsmyip.org/' 'http://www.whatismyip.org/' 'http://www.cmyip.com/' 'http://my-i-p.com/')
user_agent='Mozilla/5.0 (X11; Linux x86_64; rv:8.0) Gecko/20100101 Firefox/8.0'
iface='p10p1'
releasefile='/etc/system-release'
name="${0##*/}"

wanaddr() {
    IPADDR=''
    cnt=2
    while [ -z "$IPADDR" -a $cnt -gt 0 ]; do
        for ((j=0; j<3; j++)); do
            for i in 0 3; do
                IP_ADDR[j]=''
                url="${ipurl[j+i]}"
                [ ! -z "$url" ] && IP_ADDR[j]="`wget -l1 -U "$user_agent" -O - "$url" 2>/dev/null | grep -Eo '([[:digit:]]{1,3}\.){3}[[:digit:]]{1,3}' | head -n1`"
                [ ! -z "${IP_ADDR[j]}" ] && break
            done
        done
        if [ x"${IP_ADDR[0]}" = x"${IP_ADDR[1]}" -o x"${IP_ADDR[0]}" = x"${IP_ADDR[2]}" ]; then
            IPADDR="${IP_ADDR[0]}"
        elif [ x"${IP_ADDR[1]}" = x"${IP_ADDR[2]}" ]; then
            IPADDR="${IP_ADDR[1]}"
        fi
        ((cnt--))
    done
}