centos登录用户前的提示信息

环境介绍

由于我经常使用eve-ng模拟器，一下子拉很多台centos测试机出来。挨个点进去ip add查看ip很麻烦。所以就写了个脚本，直接vnc界面就可以看到服务器的一些信息。当然你也可以把用户名密码，数据库等其他信息加上。

脚本如下

[root@xtgby ~]# cat issue.sh 
#/bin/bash
rm -rf /etc/issue
echo "gby custom image" >> /etc/issue
for i in `ip add |grep ens| grep mtu|  awk  '{print  $2}'  | cut -d ':' -f  1`; do echo $i=`ip add |grep inet  |grep $i |awk  '{print  $2}' `; done >>/etc/issue
[root@xtgby ~]# cat /etc/rc.local 
#!/bin/bash
# THIS FILE IS ADDED FOR COMPATIBILITY PURPOSES
#
# It is highly advisable to create own systemd services or udev rules
# to run scripts during boot instead of using this file.
#
# In contrast to previous versions due to parallel execution during boot
# this script will NOT be run after all other services.
#
# Please note that you must run 'chmod +x /etc/rc.d/rc.local' to ensure
# that this script will be executed during boot.

touch /var/lock/subsys/local
#gby-/etc/issue
source /root/issue.sh

这样即使你的ip信息一直变动，那么每次开机启动都会重新读取信息。如果你的ip是后来加上的。那么你需要重新执行这个脚本。

结束之有话想说

既然看完了那就赶紧去试试吧骚年。