我希望在字符串匹配+ 2行之后添加一个新行.
这是我的档案:
allow-hotplug eth0
auto eth0
iface eth0 inet static
address 172.16.2.245
netmask 255.255.254.0
gateway 192.168.1.1
allow-hotplug eth1
#auto eth1
iface eth1 inet static
address 192.168.0.240
netmask 255.255.255.0
iface eth2 inet static
address 192.168.2.240
netmask 255.255.255.0
我想在找到'iface eth1'+ 2行后添加'gateway 192.168.1.1'.
例子:执行sed命令后我需要得到什么
allow-hotplug eth0
auto eth0
iface eth0 inet static
address 172.16.2.245
netmask 255.255.254.0
gateway 172.16.2.254
allow-hotplug eth1
#auto eth1
iface eth1 inet static
address 192.168.0.240
netmask 255.255.255.0
gateway 192.168.1.1
iface eth2 inet static
address 192.168.2.240
netmask 255.255.255.0
我知道如何找到并移动2行后,在特定字符串之后附加行等,但不能合并这2个操作.斯蒂芬
sed ×1