##########################################################################
# Title      :	freq - word frequencies
# Author     :	Heiner Steven <heiner.steven@odn.de>
# Date       :	1994-08-05
# Requires   :	awk
# Category   :	Text Utilities
# SCCS-Id.   :	@(#) freq	1.4 11/04/17
##########################################################################
# Description
#
##########################################################################

PN=`basename "$0"`			# program name
VER='1.4'

usage () {
    echo >&2 "$PN - count word frequencies, version $VER (stv '94)
usage: $PN [file ...]

The input is separated in words, and the frequency of every
word is written to the standard output. The words are sorted
by decreasing frequency.

If no file name is given, $PN reads from standard input."
    exit 1
}

[ $# -gt 0 -a X"$1" = X"-h" ] && usage

awk '
    {
    	for (i=1;i<=NF;i++) Freq [$i]++
    }
    END {
    	for ( i in Freq ) print i "	" Freq [i]
    }' "$@" |
    sort -n -k2r