linux character string turn draw

Today found a funny thing in the study sshd_config, the remote connection server prompts for a character drawing,
character drawing how to set up,

Use the tools figlet
yum install figlet -y

usage:

Usage: figlet [ -cklnoprstvxDELNRSWX ] [ -d fontdirectory ]
              [ -f fontfile ] [ -m smushmode ] [ -w outputwidth ]
              [ -C controlfile ] [ -I infocode ] [ message ]

-c show centered
-f specified font
-p imported from a file
-w specified width

After installation you can use showfigfontsfonts and view the results available.

The default font is standard
figlet xiao xuan

You can specify font
figlet -f smslant xiao xuan

View fonts
figlist

Production Figlet clock, refreshed every second
watch -n1 "date '+%D%n%T'|figlet -k"