Adding Swap File to Currently Installed Ubuntu OS
1. Create a file with a size you prefer.
# sudo dd if=/dev/zero of=/mnt/512Mb.swap bs=1M count=512
2. Format the created file
# sudo mkswap /mnt/512Mb.swap
3. Add the swap to the running system.
# sudo swapon /mnt/512Mb.swap
to check if the swap file has been activated use # cat /proc/meminfo or # free -t
4. To make the swap permanent every other boot.
# gksudo gedit /etc/fstab
Add the line at the end of the file
/mnt/512Mb.swap none swap sw 0 0
5. Save and reboot the system.
source: help.ubuntu
# sudo dd if=/dev/zero of=/mnt/512Mb.swap bs=1M count=512
2. Format the created file
# sudo mkswap /mnt/512Mb.swap
3. Add the swap to the running system.
# sudo swapon /mnt/512Mb.swap
to check if the swap file has been activated use # cat /proc/meminfo or # free -t
4. To make the swap permanent every other boot.
# gksudo gedit /etc/fstab
Add the line at the end of the file
/mnt/512Mb.swap none swap sw 0 0
5. Save and reboot the system.
source: help.ubuntu
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