Recursively count lines of files in a directory

dwc.sh

#!/bin/bash

##############################################################################
# NAME                                                                       #
#        dwc  - 'Directory Word Count' - print and format newline, word, and #
#        byte counts for each file.                                          #
#                                                                            #
# SYNOPSIS                                                                   #
#        dwc [OPTION]... [FILE]...                                           #
#        dwc [OPTION]... --files0-from=F                                     #
#                                                                            #
# DESCRIPTION                                                                #
#        Wraps wc and provides additional options for recursive counting and #
#        formatting of output.  The  wc command is  invoked with all options #
#        and arguments that apply to it in  each directory  that is desired, #
#        and the  output is piped through various  other programs to produce #
#        the desired format. All options and arguments that apply to wc also #
#        apply to dwc. See the manpage for wc(1) for additional information. #
#                                                                            #
# AUTHOR                                                                     #
#        Written by Rebecca 'TF' Nelson                                      #
##############################################################################

get_total ()
{
	((t1 = 0))
	((t2 = 0))
	((t3 = 0))
	((t4 = 0))
	t1set=
	t2set=
	t3set=
	t4set=
	for file in *
	do
		if [ -d "$file" ]
		then
			cd $file
			sub_tot=$(get_total)
			cd ..
			if [ -n "$sub_tot" ]
			then
				set $sub_tot
				if [ -n "$1" ]
				then
					t1set=1
					((t1 += $1))
				fi
				if [ -n "$2" ]
				then
					t2set=1
					((t2 += $2))
				fi
				if [ -n "$3" ]
				then
					t3set=1
					((t3 += $3))
				fi
				if [ -n "$4" ]
				then
					t4set=1
					((t4 += $4))
				fi
			fi
		fi
	done
	files=
	move_files=
	for f in *.$EXT
	do
		dest=$(echo $f | sed 's/ /_/g')
		if [[ "$dest" != "$f" ]]
		then
			cp "$f" $dest
			move_files="$move_files $dest"
			files="$files $dest"
		else
			files="$files $f"
		fi
	done
	files=$(echo $files | sed 's/^ //')
	if [ "$files" != '*'.$EXT ]
	then
		WC_ARGS="$WC_ARGS $files"
		set $(wc $WC_ARGS | sed 's/\t/ /g' | grep -o '\([0-9]\+ *\)\+' | tail -1)
		if [ -n "$1" ]
		then
			t1set=1
			((t1 += $1))
		fi
		if [ -n "$2" ]
		then
			t2set=1
			((t2 += $2))
		fi
		if [ -n "$3" ]
		then
			t3set=1
			((t3 += $3))
		fi
		if [ -n "$4" ]
		then
			t4set=1
			((t4 += $4))
		fi
	fi
	for f in $move_files
	do
		rm $f
	done
	output=
	if [ -n "$t1set" ]
	then
		output="$output $t1"
	fi
	if [ -n "$t2set" ]
	then
		output="$output $t2"
	fi
	if [ -n "$t3set" ]
	then
		output="$output $t3"
	fi
	if [ -n "$t4set" ]
	then
		output="$output $t4"
	fi
	output=$(echo $output | sed 's/ +/ /g' | sed 's/^ //' | sed 's/ $//')
	echo $output
}

DIR_NAME=$1
EXT=$2
shift 2

WC_ARGS=
while [ -n "$1" ]
do
	WC_ARGS="$WC_ARGS $1"
	shift
done

cd $DIR_NAME

get_total