Allen Briggs' wtf(6) to grovel the acronyms database.

games/wtf/Makefile

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+#	$NetBSD: Makefile,v 1.1 1999/07/22 01:03:20 mrg Exp $
+
+SCRIPTS=	wtf
+SCRIPTSDIR=	/usr/games
+MAN=		wtf.6
+
+.include <bsd.prog.mk>

games/wtf/wtf

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+#!/bin/sh
+#
+#	$NetBSD: wtf,v 1.1 1999/07/22 01:03:20 mrg Exp $
+#
+# Public domain
+#
+
+acronyms=${ACRONYMDB:-/usr/share/misc/acronyms}
+
+if [ $1 = "is" ] ; then
+	shift
+fi
+
+if [ $# -lt 1 ] ; then
+	echo "Usage: $0 [is] <acronym>"
+fi
+
+rv=0
+while [ $# -gt 0 ] ; do
+	target=`echo $1 | tr '[a-z]' '[A-Z]'`
+	ans=`sed -ne "/^$target/s/^$target[ 	]*//p" < $acronyms 2>/dev/null`
+	if [ "$ans" != "" ] ; then
+		echo "$target: $ans"
+	else
+		echo "Gee...  I don't know what $1 means..."
+		rv=1
+	fi
+	shift
+done
+exit $rv

games/wtf/wtf.6

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+.\"	$NetBSD: wtf.6,v 1.1 1999/07/22 01:03:21 mrg Exp $
+.\"
+.\" Public Domain
+.\"
+.Dd July 21, 1999
+.Dt WTF 1
+.Os
+.Sh NAME
+.Nm wtf
+.Nd translates acronyms for you
+.Sh SYNOPSIS
+.Nm
+.Op Ar is
+.Ar acronym Ar ...
+.Sh DESCRIPTION
+The
+.Nm
+utility displays the expansion of the acronyms 
+specified on the command line.
+.Pp
+If
+.Dq is
+is specified on the command line, it will be ignored, allowing the
+fairly natural 
+.Dq wtf is WTF
+usage.
+.Sh ENVIRONMENT
+.Bl -tag -width ACRONYMDB
+.It Ev ACRONYMDB
+The default acronym database may be overridden by setting the
+environment variable
+.Ev ACRONYMDB
+to the name of a file in the proper format (acronym[tab]meaning).
+.El
+.Sh FILES
+.Bl -tag -width /usr/share/misc/acronyms -compact
+.It Pa /usr/share/misc/acronyms
+default acronym database.
+.El
+.Sh HISTORY
+.Nm
+first appeared in
+.Nx 1.5 .