diff --git a/increment.sh b/increment.sh
new file mode 100755
index 0000000..22de089
--- /dev/null
+++ b/increment.sh
@@ -0,0 +1,2 @@
+read b
+echo $(expr 1 + $b)
diff --git a/install.conf.yaml b/install.conf.yaml
index f6d0dd4..2312688 100644
--- a/install.conf.yaml
+++ b/install.conf.yaml
@@ -16,6 +16,7 @@
       path: keymap.xkb
     ~/.gitignore: gitignore
     ~/.config/kak/kakrc: kakrc
+    /usr/local/bin/inc: increment.sh
     ~/Library/Preferences/com.apple.Terminal.plist:
       force: true
       path: com.apple.Terminal.plist