From 6c3734a63b3814819ce40bf69f37030676f810c3 Mon Sep 17 00:00:00 2001
From: "Kevin Veen-Birkenbach [aka. Frantz]" <kevin@veen.world>
Date: Wed, 30 Oct 2019 10:29:26 +0100
Subject: [PATCH] Optimized creation of of swap for multiple setup runs

---
 scripts/system-setup.sh | 19 +++++++++++++------
 1 file changed, 13 insertions(+), 6 deletions(-)

diff --git a/scripts/system-setup.sh b/scripts/system-setup.sh
index 1c64581..503c9d7 100644
--- a/scripts/system-setup.sh
+++ b/scripts/system-setup.sh
@@ -10,12 +10,19 @@ echo "Copying templates to home folder..."
 cp -rfv "$TEMPLATE_PATH/." "$HOME"
 echo "Synchronising packages..."
 sudo pacman -Syyu
-echo "Creating swap partition..."
-sudo fallocate -l 16G /swapfile
-sudo chmod 600 /swapfile
-sudo mkswap /swapfile
-sudo swapon /swapfile
-sudo echo "/swapfile none swap defaults 0 0">>/etc/fstab
+FSTAB_SWAP_ENTRY="/swapfile none swap defaults 0 0"
+SWAP_FILE="/swapfile"
+FSTAB_FILE="/etc/fstab"
+if grep -q "$FSTAB_SWAP_ENTRY" "$FSTAB_FILE"; then
+	echo "Skipping creation of swap partion because entry allready exists in <<$FSTAB_FILE>>!"
+else
+	echo "Creating swap partition..."
+	sudo fallocate -l 16G "$SWAP_FILE"
+	sudo chmod 600 "$SWAP_FILE"
+	sudo mkswap "$SWAP_FILE"
+	sudo swapon "$SWAP_FILE"
+	sudo echo "$FSTAB_SWAP_ENTRY">>"$FSTAB_FILE"
+fi
 echo "Synchronizing programing language interpreters..."
 sudo pacman --needed -S jdk11-openjdk python php
 echo "Synchronizing compression tools..."