#!	/bin/bash
#
#	Usage: mytree [ dir ... ]
#
#	prints statistics about a directory tree
#
#	hvf	06.01.04 22.01.04
#	Version 4 mit find
#	Version 8 mit bash builtin Arithmetik

DIRS=0; REG=0; LINKS=0; PIPES=0; SOCKETS=0; CDEV=0; BDEV=0; OTHERS=0; TOTAL=0

function doit() {	# does one level of directories and calls all subdirs
	for i 			# in $*
	do
		DIRLIST="`find $i -type d -maxdepth 1 -mindepth 1 | sort`"
		T=0
		for x in f d l p s b c	# Schleife durch alle Dateitypen
		do
			ANZ=`find $i -type $x -maxdepth 1 -mindepth 1 | wc -l`	
			case $x in
				f) 	R=$ANZ		# regular file
					((REG=$REG + $R));;
				d) 	D=$ANZ	 	# directory
					((DIRS=$DIRS + $D));;
				l) 	L=$ANZ		# symbolic link
					((LINKS=$LINKS + $L));;
				p) 	P=$ANZ		# named pipe
					((PIPES=$PIPES + $P));;
				s) 	S=$ANZ		# socket
					((SOCKETS=$SOCKETS + $S));;
				b) 	B=$ANZ		# block device 
					((BDEV=$BDEV + $B));;
				c) 	C=$ANZ		# character device 
					((CDEV=$CDEV + $C));;
			esac
			((T=$T + $ANZ))
		done
		((TOTAL=$TOTAL + $T))
		printf "%6d%6d%6d%6d%6d%5d%5d%6d%6d  %s\n" $D  $R  $L \
		 $P  $S  $C  $B  $OTHERS $T $i
		[ -n "$DIRLIST" ] && doit $DIRLIST
	done
	return
}

echo "  Dirs   Reg  Lnks Pipes Socks Cdev Bdev Other Total  Directory"
echo "-----------------------------------------------------------------------"

# Die Funktion doit arbeitet rekursiv die übergebenen Directories ab

if test $# -eq 0
then
	doit .
else
	doit $* 
fi

echo "-----------------------------------------------------------------------";
printf "%6d%6d%6d%6d%6d%5d%5d%6d%6d  %s\n" $DIRS  $REG  $LINKS \
		 $PIPES  $SOCKETS  $CDEV  $BDEV  $OTHERS $TOTAL total
echo "-----------------------------------------------------------------------"
exit 0