diff --git a/scripts/includes/nix.sh b/scripts/includes/nix.sh
index 1e94b6f..671c7f1 100644
--- a/scripts/includes/nix.sh
+++ b/scripts/includes/nix.sh
@@ -1,4 +1,6 @@
+# Nixos only
 if command -v nixos-rebuild &> /dev/null; then
+
     alias rebuild="nixos-rebuild switch"
     alias gc="nix-collect-garbage -d"
     alias rebuild-gc="rebuild; gc"
diff --git a/scripts/zshrc.sh b/scripts/zshrc.sh
index a4c09ba..2062930 100755
--- a/scripts/zshrc.sh
+++ b/scripts/zshrc.sh
@@ -38,6 +38,11 @@ adblan() {
 }
 alias adblan-start="adb tcpip 16523"
 
+# Add line if it doesn't exist in a file
+addline() {
+  grep -qxF "$2" "$1" || echo "$2" >> $1
+}
+
 # Minecraft coloring
 color() {
     tmp="$@"