diff --git a/functions/misc.zsh b/functions/misc.zsh
index 08c6b59..f62cbbe 100755
--- a/functions/misc.zsh
+++ b/functions/misc.zsh
@@ -364,7 +364,17 @@ function watch_and_run() {
 
 # use watch and force color with grc
 function watchc() {
-	watch --differences --interval 1 --color grc --colour=on $@
+    watch --differences --interval 1 --color grc --colour=on $@
+}
+
+# make a backup copy of the argument adding the .bak suffix
+function bak() {
+    cp $1{,.bak}
+}
+
+# restore a backup copy created using `bak`
+function unbak() {
+    mv $1{.bak,}
 }
 
 # highlight functions with when calling which