swap.sh(檔案已創建)
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| 1 | + | #!/bin/bash | |
| 2 | + | ||
| 3 | + | # Define the swap file location and size | |
| 4 | + | SWAPFILE="/swapfile" | |
| 5 | + | SWAPSIZE="64G" | |
| 6 | + | ||
| 7 | + | # Check if the script is being run as root | |
| 8 | + | if [ "$(id -u)" -ne 0 ]; then | |
| 9 | + | echo "This script must be run as root" | |
| 10 | + | exit 1 | |
| 11 | + | fi | |
| 12 | + | ||
| 13 | + | # Ensure util-linux is installed for mkswap and swapon commands | |
| 14 | + | apt-get update | |
| 15 | + | apt-get install -y util-linux | |
| 16 | + | ||
| 17 | + | # Create the swap file with the defined size | |
| 18 | + | fallocate -l $SWAPSIZE $SWAPFILE | |
| 19 | + | ||
| 20 | + | # Set the correct permissions for the swap file | |
| 21 | + | chmod 600 $SWAPFILE | |
| 22 | + | ||
| 23 | + | # Set up the swap area | |
| 24 | + | /sbin/mkswap $SWAPFILE | |
| 25 | + | ||
| 26 | + | # Enable the swap file | |
| 27 | + | /sbin/swapon $SWAPFILE | |
| 28 | + | ||
| 29 | + | # Add the swap file to /etc/fstab for automatic mounting at boot | |
| 30 | + | echo "$SWAPFILE none swap sw 0 0" >> /etc/fstab | |
| 31 | + | ||
| 32 | + | # Verify the swap file is active | |
| 33 | + | /sbin/swapon --show | |
| 34 | + | ||
| 35 | + | # Confirm the swap file entry in /etc/fstab | |
| 36 | + | grep swapfile /etc/fstab | |
| 37 | + | ||
| 38 | + | echo "Swap file created and activated successfully." | |
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