💾 Swap File Auto Setup Script

This script allows you to easily create and configure swap memory on your Linux VPS (ideal for low-RAM servers like those with 1GB RAM). It interactively guides you through the process and applies sensible defaults if you just press Enter.

---

🚀 Quick Install

You can run this script in one line directly from your terminal:

bash <(curl -Ls https://raw.githubusercontent.com/iamhelitha/swap-file-setup/main/install.sh)

---

📌 Features

• Interactive terminal prompts with default options
• Auto-creates and enables a swap file
• Configures swappiness and cache pressure
• Works with fallocate or falls back to dd
• Permanently persists settings across reboots
• Detects and updates existing swap files if requested

---

🖥️ Supported Operating Systems

• Ubuntu (16.04 and above)
• Debian (9 and above)
• Other systemd-based Linux distributions (may require minor tweaks)

⚠️ Not tested on CentOS, Fedora, or Alpine — feel free to open issues if you'd like support added!

---

🛠️ What It Does

1. Checks if swap is already enabled and offers to update it
2. Asks for the desired swap size (e.g. 1G, 512M) — defaults to 1G
3. Creates a swap file and enables it
4. Configures vm.swappiness and vm.vfs_cache_pressure
5. Adds swap file to /etc/fstab for persistence
6. Shows memory status at the end

---

🧩 Example Output

==============================
  SWAP FILE SETUP FOR VPS
==============================

Enter swap size (e.g., 1G, 512M) [default: 1G]:
[*] Creating a 1G swap file at /swapfile...

[✓] Swap successfully enabled with 1G

---

🙋‍♂️ Why Use Swap?

Swap helps extend available memory when RAM is full — crucial on small VPS servers where running MySQL, Apache, Node, or other services can cause memory pressure.

---

📃 License

MIT License. Use freely and modify as needed.