OpenWRT в фоне

#!/bin/bash
source /root/skips.conf
if [ -f /root/cards ]; then 
    CardsVer=$(head -n 1 /root/cards | grep -o '[0-9]\+')
else 
    CardsVer=0
fi
mac=$(ifconfig eth0 | grep -o -E '([[:xdigit:]]{1,2}:){5}[[:xdigit:]]{1,2}')
echo "${server}GetCards.php?${mac}_GetFile_${CardsVer}" >> /tmp/w.log
for i in 1 2 3 4 5
do
echo "i = ${i}" >> /tmp/w.log
res=`wget-nossl -d -T 60 --read-timeout=60 -t 1 --output-document="/tmp/SkipsCards" "$server"GetCards.php?"$mac"_GetFile_"$CardsVer"`
export RC=$?
echo "RC = ${RC}" >> /tmp/w.log
if [ "$RC" == "0" ]; then
    CardsVer=$(head -n 1 /tmp/SkipsCards | grep -o '[0-9]\+')
    if [ "$CardsVer" != "" ]; then
        haveEnd=$(tail -2 /tmp/SkipsCards | grep !END)
        if [ "$haveEnd" != "" ]; then
            mv -f /tmp/SkipsCards /root/cards
            wget-nossl -t 1 -qO- "$server"GetCards.php?"$mac"_UpdateOK_"$CardsVer"
        else
            wget-nossl -T 1 --read-timeout=1 -t 1 -qO- "$server"GetCards.php?"$mac"_Error_1
        fi
    fi
  break
fi
echo "..." >> /tmp/w.log
sleep 20s
done