帮忙写一个脚本.谢谢!

luxinjun888

有个问题，我在用KEEPalivede 的时候脚本不执行，想大家帮忙搞个SHELL脚本，判断我在执行 ip add命令的时候，能找到一个IP 192.168.3.91 ，如果有这个IP，就执行另一个脚本 /root/hello.sh ，如果没有这个IP就退出。ip add结果如下：
[root@mer ~]# ip add
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
    inet6 ::1/128 scope host
       valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast qlen 1000
    link/ether 78:2b:cb:60:5d:cc brd ff:ff:ff:ff:ff:ff
    inet 192.168.3.96/24 brd 10.1.39.255 scope global eth0
    inet 192.168.3.91/32 scope global eth0
    inet6 fe80::7a2b:cbff:fe60:5dcc/64 scope link
       valid_lft forever preferred_lft forever
3: eth1: <BROADCAST,MULTICAST> mtu 1500 qdisc noop qlen 1000
    link/ether 78:2b:cb:60:5d:ce brd ff:ff:ff:ff:ff:ff
4: eth2: <BROADCAST,MULTICAST> mtu 1500 qdisc noop qlen 1000
    link/ether 78:2b:cb:60:5d:d0 brd ff:ff:ff:ff:ff:ff
5: eth3: <BROADCAST,MULTICAST> mtu 1500 qdisc noop qlen 1000
    link/ether 78:2b:cb:60:5d:d2 brd ff:ff:ff:ff:ff:ff
6: sit0: <NOARP> mtu 1480 qdisc noop
    link/sit 0.0.0.0 brd 0.0.0.0
[root@mer ~]#

rdcwayx

1. ip add  |grep 192.168.3.91 > /dev/null &&  /root/hello.sh || exit

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