Create swap.md

Author: lwindolf

Cheat Sheets/DevOps Linux/swap.md

@@ -0,0 +1,15 @@
+Commands to manage swap files
+
+## CLI
+
+    swapon <file>            # Mount unmount swap
+    swapoff <file>
+
+    mkswap /dev/xxx          # Create swap file / device
+    mkswap --size 8GiB <file>
+
+    free | grep Swap         # Show active/used swap space
+
+## Permanent mount in /etc/fstab
+
+    /swapfile    none    swap    sw    0       0