+#!/bin/bash
+
+png=$1
+steps=()
+
+function step() {
+ "$@"
+ mv -f {_,}_.png
+ steps+=($(stat -f "%z" _.png))
+}
+
+pngcrush=/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/pngcrush
+
+grep CgBI "${png}" &>/dev/null && exit 0
+
+step cp -fa "${png}" __.png
+
+#step "${pngcrush}" -q -rem alla -reduce -brute -iphone {,_}_.png
+
+#step "${pngcrush}" -q -rem alla -reduce -brute {,_}_.png
+#step pincrush {,_}_.png
+
+step "${pngcrush}" -q -rem alla -reduce -iphone {,_}_.png
+
+#"${pngcrush}" -q -rem alla -reduce -brute -iphone "${png}" 1.png
+#"${pngcrush}" -q -iphone _.png 2.png
+#ls -la 1.png 2.png
+
+mv -f _.png "${png}"
+
+echo -n "${png##*/} "
+for ((i = 0; i != ${#steps[@]}; ++i)); do
+ if [[ $i != 0 ]]; then
+ echo -n " "
+ fi
+
+ echo -n "${steps[i]}"
+done
+
+printf $' %.0f%%\n' "$((steps[${#steps[@]}-1] * 100 / steps[0]))"