Fixed ++)) error and edited gitignore

.gitignore

@@ -1,4 +1,5 @@
 agents/
 extra-files/
 final-nix-config/
-test*
+test*
+.DS_Store

deploy.sh

@@ -1,5 +1,5 @@
 #!/usr/bin/env nix-shell
-#!nix-shell -i bash -p gum fastfetch xkcdpass sops ssh-to-age age sshpass envsubst pciutils usbutils mosquitto
+#!nix-shell -i bash -p bash coreutils gum fastfetch xkcdpass sops ssh-to-age age sshpass envsubst pciutils usbutils mosquitto
 
 
 
@@ -492,7 +492,7 @@ EOF
 EOF
     j=0
     for i in $(seq 0 $(($CONTENT_DISK_NUMBER - 1))); do
-      export ((j++))
+      export j=$((j+1))
       export CONTENT_DISK_ID="${DATA_DISKS_ID[${i}]}"
       (envsubst < "templates/nix-config/disks/content.nix") >> final-nix-config/etc/nixos/disks/disko.nix
       cat << EOF >> final-nix-config/etc/nixos/disks/snapraid.nix
@@ -505,7 +505,7 @@ EOF
     echo -e "\n✅ Generated $CONTENT_DISK_NUMBER data disk configuration(s)."
     j=0
     for i in $(seq $PARITY_DISK_NUMBER $((${#DATA_DISKS_ID[@]} - 1))); do
-      export ((j++))
+      export j=$((j+1))
       export PARITY_DISK_ID="${DATA_DISKS_ID[${i}]}"
       (envsubst < "templates/nix-config/disks/parity.nix") >> final-nix-config/etc/nixos/disks/disko.nix
       cat << EOF >> final-nix-config/etc/nixos/disks/snapraid.nix