在 Linux 中将主机名添加到 /etc/hosts
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/5144738/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
Adding host name to /etc/hosts in Linux
提问by M99
Question: Is there an easy way to add DHCP issued IP address and Hostname of a linux machine in /etc/hosts at System startup automatically?
问题：有没有一种简单的方法可以在系统启动时自动在 /etc/hosts 中添加 DHCP 发布的 IP 地址和 Linux 机器的主机名？
Background: My Linux machine has a hostname in /etc/hostname and it won't resolve to anything when I ping. I manually added my hostname and ip address in /etc/hosts for one my network related java programs to work.
背景：我的 Linux 机器在 /etc/hostname 中有一个主机名，当我 ping 时它不会解析为任何内容。我在 /etc/hosts 中手动添加了我的主机名和 IP 地址，以便我的网络相关 java 程序正常工作。
Thanks,
谢谢，
采纳答案by Marc B
dhcpcd has a -c/--scriptoption to run an external script anytime it configures or brings up an interface. You can use this to manually update the hosts file with the configured hostname.
dhcpcd 可以-c/--script选择在配置或调出界面时随时运行外部脚本。您可以使用它来手动更新带有配置的主机名的主机文件。
回答by Diego Torres Milano
回答by Markus Pscheidt
In Ubuntu, add an executable file into the /etc/network/if-up.ddirectory. Files in this directory get executed after the network manager configures a network interface.
在 Ubuntu 中，将一个可执行文件添加到/etc/network/if-up.d目录中。此目录中的文件在网络管理员配置网络接口后执行。
You may adapt the following script :
您可以修改以下脚本：
#!/bin/sh
set -e
if [ "$IFACE" = lo ]; then
exit 0
fi
myHostName=`hostname`
# Remove current line with hostname at the end of line ($ means end of line)
sed -i '/'$myHostName'$/ d' /etc/hosts
ipaddr=$(ifconfig | grep 'inet addr:'| grep -v '127.0.0.1' | cut -d: -f2 | awk '{ print }')
echo "$ipaddr $myHostName" >>/etc/hosts
回答by nomadic_squirrel
I took what @Markus did and put it into a normal script. This works on my Fedora 20 box:
我拿了@Markus 所做的并将其放入普通脚本中。这适用于我的 Fedora 20 盒子：
#!/bin/sh
MYHOST=firtree
echo "before:"
cat /etc/hosts
# Remove current line with hostname at the end of line ($ means end of line)
sed -i '/'$MYHOST'$/ d' /etc/hosts
echo "after remove: "
cat /etc/hosts
IPADDR=$(ifconfig | awk -F" +|:" '/inet addr/ && != "127.0.0.1" {print }')
echo "$IPADDR $MYHOST" >>/etc/hosts
echo "ip: " $IPADDR
echo "final: "
cat /etc/hosts
This does have to be run as root, and probably should go in an init.d folder.
这确实必须以 root 身份运行，并且可能应该放在 init.d 文件夹中。
回答by deepujain
From
从
ipaddr=$(ifconfig | grep 'inet addr:'| grep -v '127.0.0.1' | cut -d: -f2 | awk '{ print }')
host=`hostname`
fhost=`hostname -f`
echo "$ipaddr $fhost $host" >> /etc/hosts
cat /etc/hosts
回答by Tsioneb
I personally use this script to set my hostname (existing one) + dynamic IP to /etc/hostsfile :
我个人使用此脚本将我的主机名（现有的）+ 动态 IP 设置为/etc/hosts文件：
#!/bin/bash
ipaddr=$(/sbin/ifconfig eth0| grep 'inet addr' | cut -d: -f2 | awk '{print }')
hn=$(hostname)
hnd=$(hostname -f)
sed -i '2s/.*/'$ipaddr' '$hnd' '$hn'/' /etc/hosts
Kind regards,
亲切的问候，
