diff --git a/tools/idem_apt_install b/tools/idem_apt_install
index 651a6d5..c2e211d 100755
--- a/tools/idem_apt_install
+++ b/tools/idem_apt_install
@@ -1,53 +1,52 @@
-#!/bin/bash
+#!/usr/bin/env miaou-bash
 
 function usage {
-	local BASECMD
-	BASECMD=$(basename "$0")
-	echo "usage: $BASECMD <packages...>"
-	case $(os-release) in
-	debian)
-		echo 'idempotent debian package installation : update if necessary, install only if not yet done'
-		;;
-	arch)
-		echo 'idempotent archlinux package installation : update if necessary, install only if not yet done'
-		;;
-	esac
+  local BASECMD
+  BASECMD=$(basename "$0")
+  echo "usage: $BASECMD <packages...>"
+  case $(os-release) in
+  debian)
+    echo 'idempotent debian package installation : update if necessary, install only if not yet done'
+    ;;
+  arch)
+    echo 'idempotent archlinux package installation : update if necessary, install only if not yet done'
+    ;;
+  esac
 
-	exit 1
+  exit 1
 }
 
-BASEDIR=$(dirname "$0")
-source "$BASEDIR"/../lib/functions.bash
-
-[ "$(id -u)" -ne 0 ] && echo 'root privilege required' && exit 2
+[ "$UID" -ne 0 ] && echo 'root privilege required' && exit 2
 [[ $# -lt 1 ]] && usage
 
+source "$MIAOU_BASH_DIR"/lib/functions.bash
+
 case $(os-release) in
 debian | ubuntu | linuxmint)
-	if [ "$(date --date='-12 hours' +%s)" -gt "$(date -d "$(stat -c %y /var/lib/apt/lists/partial)" +%s)" ]; then
-		echo "updating repositoring..."
-		apt-get update
-	fi
+  if [ "$(date --date='-12 hours' +%s)" -gt "$(date -d "$(stat -c %y /var/lib/apt/lists/partial)" +%s)" ]; then
+    echo "updating repositoring..."
+    apt-get update
+  fi
 
-	for i in "$@"; do
-		if ! dpkg -l "$i" 2>/dev/null | grep -q ^ii; then
-			sudo apt-get install -y "$i"
-		elif [ -n "${VERBOSE+x}" ] && $VERBOSE; then
-			echo "apt package <$i> already installed!"
-		fi
-	done
-	;;
+  for i in "$@"; do
+    if ! dpkg -l "$i" 2>/dev/null | grep -q ^ii; then
+      apt-get install -y "$i"
+    elif [ -n "${VERBOSE+x}" ] && $VERBOSE; then
+      echo "apt package <$i> already installed!"
+    fi
+  done
+  ;;
 arch)
-	sudo pacman -Syyu --noconfirm
-	for i in "$@"; do
-		if ! pacman -Ql "$i" &>/dev/null; then
-			sudo pacman -S --noconfirm "$i"
-		elif [ -n "${VERBOSE+x}" ] && $VERBOSE; then
-			echo "pacman package <$i> already installed!"
-		fi
-	done
-	;;
+  pacman -Syyu --noconfirm
+  for i in "$@"; do
+    if ! pacman -Ql "$i" &>/dev/null; then
+      pacman -S --noconfirm "$i"
+    elif [ -n "${VERBOSE+x}" ] && $VERBOSE; then
+      echo "pacman package <$i> already installed!"
+    fi
+  done
+  ;;
 *)
-	echo "unknown os release <$(os-release)>!" && exit 2
-	;;
+  echo "unknown os release <$(os-release)>!" && exit 2
+  ;;
 esac