版权声明：本文为博主原创文章，未经博主允许不得转载。 https://blog.csdn.net/agave7/article/details/85629053
figlet 制作 banner
apt-get install figlet
figlet helloworld
root@debian:~# figlet HelloWorld
_ _ _ _ __ __ _ _
| | | | ___| | | __\ \ / /__ _ __| | __| |
| |_| |/ _ \ | |/ _ \ \ /\ / / _ \| '__| |/ _` |
| _ | __/ | | (_) \ V V / (_) | | | | (_| |
|_| |_|\___|_|_|\___/ \_/\_/ \___/|_| |_|\__,_|
进入官网查看更多字体效果：http://www.figlet.org/
2.在登录时显示banner
vi /etc/motd
The programs included with the Debian GNU/Linux system are free software;
the exact distribution terms for each program are described in the
individual files in /usr/share/doc/*/copyright.
Debian GNU/Linux comes with ABSOLUTELY NO WARRANTY, to the extent
permitted by applicable law.
_ _ _ _ __ __ _ _
| | | | ___| | | __\ \ / /__ _ __| | __| |
| |_| |/ _ \ | |/ _ \ \ /\ / / _ \| '__| |/ _` |
| _ | __/ | | (_) \ V V / (_) | | | | (_| |
|_| |_|\___|_|_|\___/ \_/\_/ \___/|_| |_|\__,_|
这样，每次ssh 登录都能看到 banner显示了！