banner [-w n] message
The banner(1) utility prints a large, high-quality banner on the standard output. If the message is omitted, it prompts for and reads one line of its standard input. If -w is given, the output is reduced from a width of 132 to n, suitable for a narrow terminal. If n is omitted, it defaults to 80.
The output should be printed on a hard-copy device, up to 132 columns wide, with no breaks between the pages. The volume is great enough that you might want a printer or a fast hard-copy terminal. You can also use a decwriter or other 300-baud terminal, but the process on these will be slow.
Several ASCII characters are not defined, notably:
<, >, [, ], \, ^, _, {, }, |, and ~. The characters ", ', and
& have an odd appearance, but this can be useful.
The -w option is implemented by skipping some rows and columns. The smaller it gets, the grainier the output. Sometimes it runs letters together.