diff --git a/scripts/cleanup b/scripts/cleanup
new file mode 100755
index 00000000..956a6884
--- /dev/null
+++ b/scripts/cleanup
@@ -0,0 +1,3 @@
+find . -name "*~" -print -exec rm -f {} \;
+find . -name "errs" -print -exec rm -f {} \;
+find . -name "log" -print -exec rm -f {} \;
diff --git a/scripts/substitute b/scripts/substitute
new file mode 100755
index 00000000..3066c4ef
--- /dev/null
+++ b/scripts/substitute
@@ -0,0 +1,6 @@
+#!/bin/bash
+
+export LANG=C
+find . -name "*.cc" -print -exec sed -e "s/${1}/${2}/g" -i .bak {} \;
+find . -name "*.h" -print -exec sed -e "s/${1}/${2}/g" -i .bak {} \;
+find . -name "*.bak" -exec rm -f {} \;