Various programs for printing banner-style output for Plan 9.

sysvbanner.c is a straight-forward native port of sysvbanner
found in FreeBSD's ports tree.

linebanner.c follows the same idea, but uses the Unicode box
drawing characters for output. It is more demanding on your
font — it has to include these characters, but also needs
space to be the same width — but, given a suitable font,
looks much nicer.

sysvbanner and linebanner are written for Plan 9, but run
equally well under plan9port; in linebanner.c you'll need to
change "#include <String.h>" to "#include <libString.h>" first.