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content/tech/HowTo_make_swapfile.md

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+title = "HowTo make swapfile"
+date = 2024-05-12
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+
+Script  creates swapfile in current dir with size of physical RAM  
+(you can just CopyPaste to terminal)
+
+```bash
+ram=$(($(cat /proc/meminfo | grep -i 'memtotal' | grep -o '[[:digit:]]*')/1024/1024+1))
+
+touch ./swapfile
+chattr +C ./swapfile #btrfs fix
+sudo fallocate -l ${ram}G ./swapfile
+sudo chmod 600 ./swapfile
+sudo mkswap ./swapfile
+sudo swapon ./swapfile
+
+swapon --show
+```
+
+  
+ 
+Swap is not permanent, to make it permanent:  
+```bash
+sudo cp /etc/fstab /etc/fstab.bak
+
+echo "$PWD/swapfile none swap sw 0 0" | sudo tee -a /etc/fstab
+```
+
+{{< source >}}
+https://itsfoss.com/create-swap-file-linux/
+https://wiki.archlinux.org/title/Btrfs
+{{< /source >}}