diff --git a/common.shinc b/common.shinc
index a0594cc..d982365 100644
--- a/common.shinc
+++ b/common.shinc
@@ -117,3 +117,19 @@ help() {
 
 	return 0
 }
+
+realpath $PWD > /dev/null 2>&1
+if [[ $? -ne 0 ]]; then
+	realpath() {
+	  OURPWD=$PWD
+	  cd "$(dirname "$1")"
+	  LINK=$(readlink "$(basename "$1")")
+	  while [ "$LINK" ]; do
+		cd "$(dirname "$LINK")"
+		LINK=$(readlink "$(basename "$1")")
+	  done
+	  REALPATH="$PWD/$(basename "$1")"
+	  cd "$OURPWD"
+	  echo "$REALPATH"
+	}
+fi