创作背景：
linux重命名网卡
先看截图呀
vim /etc/default/grub
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然后重启 reboot
重启后查看网络
以下贴出源码
[root@localhost ~]# ifconfig
eno16777736: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.40.129 netmask 255.255.255.0 broadcast 192.168.40.255
inet6 fe80::250:56ff:fe3f:af89 prefixlen 64 scopeid 0x20<link>
ether 00:50:56:3f:af:89 txqueuelen 1000 (Ethernet)
RX packets 86 bytes 10199 (9.9 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 88 bytes 12017 (11.7 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 0 (Local Loopback)
RX packets 72 bytes 6256 (6.1 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 72 bytes 6256 (6.1 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0[root@localhost ~]# cd /etc/sysconfig/network-scripts/
[root@localhost network-scripts]# ls
ifcfg-eno16777736 ifdown-isdn ifup ifup-plip ifup-tunnel
ifcfg-lo ifdown-post ifup-aliases ifup-plusb ifup-wireless
ifdown ifdown-ppp ifup-bnep ifup-post init.ipv6-global
ifdown-bnep ifdown-routes ifup-eth ifup-ppp network-functions
ifdown-eth ifdown-sit ifup-ib ifup-routes network-functions-ipv6
ifdown-ib ifdown-Team ifup-ippp ifup-sit
ifdown-ippp ifdown-TeamPort ifup-ipv6 ifup-Team
ifdown-ipv6 ifdown-tunnel ifup-isdn ifup-TeamPort
[root@localhost network-scripts]# [root@localhost network-scripts]# cat ifcfg-eno16777736
TYPE="Ethernet"
BOOTPROTO="dhcp"
DEFROUTE="yes"
PEERDNS="yes"
PEERROUTES="yes"
IPV4_FAILURE_FATAL="no"
IPV6INIT="yes"
IPV6_AUTOCONF="yes"
IPV6_DEFROUTE="yes"
IPV6_PEERDNS="yes"
IPV6_PEERROUTES="yes"
IPV6_FAILURE_FATAL="no"
NAME="eno16777736"
UUID="89c620f9-803f-4fad-8dff-25cfb1fa5e15"
DEVICE="eno16777736"
ONBOOT="yes"
[root@localhost network-scripts]# [root@localhost network-scripts]# vim ifcfg-eno16777736 [root@localhost network-scripts]# cat ifcfg-eno16777736
TYPE="Ethernet"
BOOTPROTO="dhcp"
DEFROUTE="yes"
PEERDNS="yes"
PEERROUTES="yes"
IPV4_FAILURE_FATAL="no"
IPV6INIT="yes"
IPV6_AUTOCONF="yes"
IPV6_DEFROUTE="yes"
IPV6_PEERDNS="yes"
IPV6_PEERROUTES="yes"
IPV6_FAILURE_FATAL="no"
NAME="eth0"
UUID="89c620f9-803f-4fad-8dff-25cfb1fa5e15"
DEVICE="eth0"
ONBOOT="yes"
[root@localhost network-scripts]# [root@localhost network-scripts]# mv ifcfg-eno16777736 ifcfg-eth0
[root@localhost network-scripts]# ls
ifcfg-eth0 ifdown-isdn ifup ifup-plip ifup-tunnel
ifcfg-lo ifdown-post ifup-aliases ifup-plusb ifup-wireless
ifdown ifdown-ppp ifup-bnep ifup-post init.ipv6-global
ifdown-bnep ifdown-routes ifup-eth ifup-ppp network-functions
ifdown-eth ifdown-sit ifup-ib ifup-routes network-functions-ipv6
ifdown-ib ifdown-Team ifup-ippp ifup-sit
ifdown-ippp ifdown-TeamPort ifup-ipv6 ifup-Team
ifdown-ipv6 ifdown-tunnel ifup-isdn ifup-TeamPort
[root@localhost network-scripts]#
[root@localhost network-scripts]# vim /etc/default/grub [root@localhost network-scripts]# cat /etc/default/grub
GRUB_TIMEOUT=5
GRUB_DISTRIBUTOR="$(sed 's, release .*$,,g' /etc/system-release)"
GRUB_DEFAULT=saved
GRUB_DISABLE_SUBMENU=true
GRUB_TERMINAL_OUTPUT="console"
GRUB_CMDLINE_LINUX="crashkernel=auto rd.lvm.lv=centos/root net.ifnames=0 biosdevname=0 rd.lvm.lv=centos/swap rhgb quiet"
GRUB_DISABLE_RECOVERY="true"[root@localhost network-scripts]# grub2-mkconfig -o /boot/grub2/grub.cfg
Generating grub configuration file ...
Found linux image: /boot/vmlinuz-3.10.0-327.el7.x86_64
Found initrd image: /boot/initramfs-3.10.0-327.el7.x86_64.img
Found linux image: /boot/vmlinuz-0-rescue-eb2406a4837f4a90acc4de83f571ae36
Found initrd image: /boot/initramfs-0-rescue-eb2406a4837f4a90acc4de83f571ae36.img
done[root@localhost network-scripts]# reboot[root@localhost ~]# ifconfig
eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.40.129 netmask 255.255.255.0 broadcast 192.168.40.255
inet6 fe80::250:56ff:fe3f:af89 prefixlen 64 scopeid 0x20<link>
ether 00:50:56:3f:af:89 txqueuelen 1000 (Ethernet)
RX packets 70 bytes 8839 (8.6 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 72 bytes 10708 (10.4 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 0 (Local Loopback)
RX packets 4 bytes 340 (340.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 4 bytes 340 (340.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
[root@localhost ~]#再贴几张图
vim /etc/default/grub 
参考链接
https://jingyan.baidu.com/article/17bd8e524c76a285ab2bb8ff.html
— —
待续……
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