linux swap cheatsheet

linux_swap_cheatsheet.txt

#  NOTES
#
#  - this approach has been tested on mint  (will work on many other distributions as well - YMMV)
#  - this approach uses swap files not partitions
#


# create a 5GB swap disk to use - run as root!
swapon --show
mkdir /swapfiles ; chmod 700 /swapfiles
fallocate -l 5G /swapfiles/swap1
chmod 600 /swapfiles/swap1 ; ls -la /swapfiles/swap1
mkswap /swapfiles/swap1 
swapon /swapfiles/swap1
swapon --show

# optionally append to /etc/fstab 
/swapfiles/swap1 none swap sw 0 0


#  ADDITIONL NOTES
#
#  - if you do not append to /etc/fstab
#    then the file will *** NOT *** be clearned up automatically after reboot.
#
#  - if you did not appened to /etc/fstab
#    best to manually remove file or consider adding to fstab (instructions above)
#    so you are not chewing up disk space unessasarly
#