Index: TipAndDoc/.bin/cmpdir
===================================================================
--- TipAndDoc/.bin/cmpdir	(revision 5eea6d8cf8e3500fb1df24de687bbc0d622534cb)
+++ TipAndDoc/.bin/cmpdir	(revision 22a2ffd7de3771cba4f1ff375b6b072ae41ee5a9)
@@ -4,4 +4,21 @@
     echo "Usage: $0 directory1 directory2"
     exit 1
+fi
+if [ $# -eq 3 ]; then
+    [ -d "$1/$3" ] && [ -d "$2/$3" ] &&
+        exit
+    [ ! -e "$1/$3" ] && [ ! -e "$2/$3" ] &&
+        echo "$0: something wrong abount '$3'" >&2 && exit
+    [ -e "$1/$3" ] && [ ! -e "$2/$3" ] &&
+        echo "Only in '$1': '$3'" >&2 && exit
+    [ ! -e "$1/$3" ] && [ -e "$2/$3" ] &&
+        echo "Only in '$2': '$3'" >&2 && exit
+    [ -f "$1/$3" ] && [ -d "$2/$3" ] &&
+        echo "'$1' is a regular file but '$2' is a directory" >&2 && exit
+    [ -d "$1/$3" ] && [ -f "$2/$3" ] &&
+        echo "'$1' is a directory but '$2' is a regular file" >&2 && exit
+    
+    cmp -s "$1/$3" "$2/$3" || echo "$1/$3" "$2/$3" are differ >&2
+    exit
 fi
 if [ -d "$1" -a -d "$2" ]; then
@@ -15,21 +32,13 @@
 wc=$PWD
 cd "$1"
-find ./ -print0 >> "$tmp"
+find -print0 >> "$tmp"
 cd $wc
 
 cd "$2"
-find ./ -print0 >> "$tmp"
+find -print0 >> "$tmp"
 cd $wc
 
 sort -z "$tmp" | uniq -z > "$list"
 
-comppath () {
-    [ ! -e "$1/$3" ] && [ ! -e "$2/$3" ] &&
-        (echo "$0: something wrong abount '$3'" >&2; return)
-    [ -e "$1/$3" ] && [ ! -e "$2/$3" ] &&
-        (echo "Only in '$1': '$3'" >&2; return)
-    [ ! -e "$1/$3" ] && [ -e "$2/$3" ] &&
-        (echo "Only in '$2': '$3'" >&2; return)
-}
 
-xargs -a "$list" -0 -n 1 -I entry cmp "$1/entry" "$2/entry"
+xargs -a "$list" -0 -n 1 -I entry $0 "$1" "$2" "entry"