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[root@luckfox init.d]$ vi S41staticip

Code: Select all

#!/bin/sh

MAX_TRIES=10
TRIES=0

check_ip_address() {
  udhcpc -i wlan0
  if ifconfig wlan0 | grep -q "inet "; then
    return 0
  else
    return 1
  fi
}

static_ip()
{
while [ $TRIES -lt $MAX_TRIES ]; do
  if check_ip_address; then
    echo "DHCP succeed!"
    ifconfig wlan0 192.168.137.21 netmask 255.255.255.0
    route add default gw 192.168.137.1
    echo "nameserver 114.114.114.114" > /etc/resolv.conf
    ifconfig wlan0 up 
    break
  else
    echo "wait DHCP IP..."
    TRIES=$((TRIES + 1))
    sleep 5 
  fi
done

if [ $TRIES -eq $MAX_TRIES ]; then
  echo "error"
fi
}

case $1 in
        start)
                echo "start"
                static_ip
                ;;
        stop)
                echo "stop"
                ;;
        *)
                exit 1
                ;;
esac

Code: Select all

[root@luckfox root]$ ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
2: eth0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc mq qlen 1000
    link/ether 62:dc:58:a9:cf:1c brd ff:ff:ff:ff:ff:ff
3: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq qlen 1000
    link/ether 90:e4:68:a6:c4:73 brd ff:ff:ff:ff:ff:ff
    inet 192.168.137.21/24 brd 192.168.137.255 scope global wlan0
       valid_lft forever preferred_lft forever