CentOS修改SSH登陆欢迎信息并显示当前服务器磁盘容量

2018 年 03 月 21 日

1506 次浏览

4311字数

用编辑器打开文件
```
    # vim /etc/motd
```

输入需要提示的信息
```shell
 **************************************************************
 *                                                            *
 *   .=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-.       *
 *    |                     ______                     |      *
 *    |                  .-"      "-.                  |      *
 *    |                 /            \                 |      *
 *    |     _          |              |          _     |      *
 *    |    ( \         |,  .-.  .-.  ,|         / )    |      *
 *    |     > "=._     | )(__/  \__)( |     _.=" <     |      *
 *    |    (_/"=._"=._ |/     /\     \| _.="_.="\_)    |      *
 *    |           "=._"(_     ^^     _)"_.="           |      *
 *    |               "=\__|IIIIII|__/="               |      *
 *    |              _.="| \IIIIII/ |"=._              |      *
 *    |    _     _.="_.="\          /"=._"=._     _    |      *
 *    |   ( \_.="_.="     `--------`     "=._"=._/ )   |      *
 *    |    > _.="                            "=._ <    |      *
 *    |   (_/                                    \_)   |      *
 *    |                                                |      *
 *    '-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-='      *
 *                                                            *
 *           LASCIATE OGNI SPERANZA, VOI CH'ENTRATE           *
 **************************************************************
```

然后修改配置文件可以每次登陆服务器自动显示磁盘情况
```
    # vim /root/.bash_profile
```
再结尾添加
```shell
    echo '=========================================================='
    cat /etc/redhat-release
    echo '=========================================================='
    df -lh
```
最终为
```shell
    # .bash_profile

# Get the aliases and functions
    if [ -f ~/.bashrc ]; then
            . ~/.bashrc
    fi

# User specific environment and startup programs

PATH=$PATH:$HOME/bin

export PATH
    echo '=========================================================='
    cat /etc/redhat-release
    echo '=========================================================='
    df -lh
```
先退出服务器，然后重新登陆，显示如下:
```shell
    Last login: Wed Mar 21 22:54:28 2018 from 192.168.20.50
 **************************************************************
 *                                                            *
 *   .=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-.       *
 *    |                     ______                     |      *
 *    |                  .-"      "-.                  |      *
 *    |                 /            \                 |      *
 *    |     _          |              |          _     |      *
 *    |    ( \         |,  .-.  .-.  ,|         / )    |      *
 *    |     > "=._     | )(__/  \__)( |     _.=" <     |      *
 *    |    (_/"=._"=._ |/     /\     \| _.="_.="\_)    |      *
 *    |           "=._"(_     ^^     _)"_.="           |      *
 *    |               "=\__|IIIIII|__/="               |      *
 *    |              _.="| \IIIIII/ |"=._              |      *
 *    |    _     _.="_.="\          /"=._"=._     _    |      *
 *    |   ( \_.="_.="     `--------`     "=._"=._/ )   |      *
 *    |    > _.="                            "=._ <    |      *
 *    |   (_/                                    \_)   |      *
 *    |                                                |      *
 *    '-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-='      *
 *                                                            *
 *           LASCIATE OGNI SPERANZA, VOI CH'ENTRATE           *
 **************************************************************
    ==========================================================
    CentOS Linux release 7.4.1708 (Core) 
    ==========================================================
    文件系统          容量  已用  可用   已用% 挂载点
    /dev/sda3        10G  3.9G  6.2G   39%   /
    devtmpfs        978M     0  978M    0%   /dev
    tmpfs           993M     0  993M    0%   /dev/shm
    tmpfs           993M  9.1M  984M    1%   /run
    tmpfs           993M     0  993M    0%   /sys/fs/cgroup
    /dev/sda1       197M  136M   61M   70%   /boot
    tmpfs           199M     0  199M    0%   /run/user/0

CentOS修改SSH登陆欢迎信息并显示当前服务器磁盘容量