mount: add bind mount

cheat/cheatsheets/mount

@@ -1,6 +1,9 @@
 # To mount / partition as read-write in repair mode:
 mount -o remount,rw /
 
+# Bind mount path to a second location
+mount --bind /origin/path /destination/path
+
 # To mount Usb disk as user writable:
 mount -o uid=username,gid=usergroup /dev/sdx /mnt/xxx