Add extra SWAP in Linux
If, by any chance, you happen to run out of SWAP space in Linux and you desperately need it, you can use a temporary file to supplement: dd if=/dev/zero of=/swap1.swp bs=1024 count=512K mkswap /swaptemp.swp swapon /swaptemp.swp Now verify if the image file was successfully mounted: cat /proc/swaps