shell 替换字符串

biubiuu

我要更换网卡0的mac和ip，下面是/etc/network/interfaces 文件的一部分
auto eth0
iface eth0 inet static
        pre-up ifconfig eth0 hw ether 84:7E:40:EF6:C6
        address 192.168.2.88
        netmask 255.255.255.0
        network 192.168.1.0
        gateway 192.168.1.1

我是这么做的
ip=192.168.1.1
mac=01:01:01:01:01:01

sed -i -e "0,/^address/s/.*\(address\).*/ address $ip/" $file_path
sed -i -e "0,/^pre-up/s/.*eth0.*/ pre-up ifconfig eth0 hw ether $hwadd/" $file_path

发现把后面网卡1的address也改了，之前含有eth0的行改成 pre-up ifconfig eth0 hw ether 01:01:01:01:01:01了
求各位帮帮忙，应该怎么改才对

zsszss0000

贴一个完整的文本啊回复 1# biubiuu


   

我是一隻羊

1. sed -ri '/iface eth0/{N;N;s/(ether )[^\n]*/\1'$mac'/;s/(address )[^\n]*/\1'$ip'/}' inputfile

复制代码

1. awk '/iface/{a=$2}{if(a=="eth0"){sub(/address.*/,"address '$ip'");sub(/ether.*/,"ether '$mac'")}}1' inputfile

复制代码

zsszss0000

1. cat file | awk -vMAC="11:22:33:44:55:66" -vIP="11.22.33.44" '{if($0~"auto eth0"){flag=1}else if($0~"auto eth1"){flag=0};if(flag==1){if($0~"ifconfig eth0")$7=MAC;if($0~"address")$2=IP;}}1'

复制代码

1. cat file | awk -vMAC="11:22:33:44:55:66" -vIP="11.22.33.44" '{if($0~"auto eth0"){flag=1}else if($0~"auto eth[1-9]"){flag=0};if(flag==1){if($0~"ifconfig eth0")$7=MAC;if($0~"address")$2=IP;}}1'

复制代码

biubiuu

回复 2# zsszss0000
# /etc/network/interfaces -- configuration file for ifup(, ifdown(

# The loopback interface
auto lo
iface lo inet loopback


# Wireless interfaces
#
# Example of an unencrypted (no WEP or WPA) wireless connection
# that connects to any available access point:
#
iface wlan0 inet dhcp
        wireless_mode managed
        wireless_essid any

iface tiwlan0 inet dhcp
        wireless_mode managed
        wireless_essid any
#
#
# Same as above but locked to a specific access point:
#
#iface wlan0 inet dhcp
#       wireless_mode managed
#       wireless-essid some-essid
#
# A WEP encrypted connection locked to a specific access point:
#
#iface wlan0 inet dhcp
#       wireless-essid some-essid
#       wireless-key s:My-PlainText-Password
#       wireless-mode managed
#
# A WPA1 or WPA2 encrypted connection locked to a specific access point.
# This is the best option for non-roaming, single-network usage.
# Note that your card may require a firmware update to use WPA.
# Some distributions install a temporary volatile firmware update on ifup.
#
#iface wlan0 inet dhcp
#       wpa-essid some-essid
#       wpa-psk My-PlainText-Password                                          
#
# A WPA1 or WPA2 encrypted connection using an external configuration file
# for wpa-supplicant. This is the way to go if you need to configure multiple
# networks with different keys and / or WPA settings and roaming support.
#
# iface wlan0 inet dhcp
#    wpa-conf /etc/wpa_supplicant.conf
#    wpa-driver hostap



iface atml0 inet dhcp

# Wired or wireless interfaces
auto eth0
iface eth0 inet static
        pre-up ifconfig eth0 hw ether 84:7E:40:EF6:C6
        address 192.168.2.88
        netmask 255.255.255.0
        network 192.168.1.0
        gateway 192.168.1.1
#iface eth0 inet dhcp
#        pre-up /bin/grep -v -e "ip=[0-9]\+\.[0-9]\+\.[0-9]\+\.[0-9]\+" /proc/cmdline > /dev/null

#iface eth1 inet dhcp
auto eth1
iface eth1 inet static
        address 192.168.1.89
        netmask 255.255.255.0
        network 192.168.1.0
        gateway 192.168.1.1

# Ethernet/RNDIS gadget (g_ether)
# ... or on host side, usbnet and random hwaddr
iface usb0 inet dhcp

# Zaurus 2.4 Lineo net_fd; obsolete
iface usbd0 inet static
        address 192.168.129.201
        netmask 255.255.255.0
        network 192.168.129.0
        gateway 192.168.129.200

# iPAQ 2.4 mach-sa1100/usb-eth
# (192.168.0.202 is the iPAQ's IP, 192.168.0.200 is the host's IP)
iface usbf inet static
        address 192.168.0.202
        netmask 255.255.255.0
        network 192.168.0.0
        gateway 192.168.0.200

# Bluetooth networking
iface bnep0 inet dhcp


   

zsszss0000

楼上的几种方法应该没有问题回复 5# biubiuu


   

biubiuu

回复 6# zsszss0000
在这先谢谢大家了，我继续研究

   

jason680

回复 1# biubiuu

$ awk -viface="eth0" -vip="$ip" -vmac="$mac" '/^[ \t]*#/||NF==0{print;next}/^[ \t]*iface/{seg=$2==iface?1:0}seg{if(/address/){$1="\t"$1;$2=ip};if(/pre-up/){$1="\t"$1;$NF=mac}}1' FILE > new

$ diff FILE new
59,60c59,60
<         pre-up ifconfig eth0 hw ether 84:7E:40:EF6:C6
<         address 192.168.2.88
---
>         pre-up ifconfig eth0 hw ether 01:01:01:01:01:01
>         address 192.168.1.1

   

zl624867243

同意jason的观点

jgrlj322

is  master