Using old hardware, having swap space in addition to RAM can make your computer operate more smoothly.
From a fresh 'buntu Install
After a fresh Lubuntu on an old machine (with only 2 GB of RAM), I followed the directions on "Create a Linux swap file" (Rackspace 2018) to create a swap file 1.
You can use the htop
command to see a summary of the processes running on
your computer in addition to CPU and memory usage.
On Arch Linux
Just check the Arch Wiki for the latest instrtuctions. I blindly followed the directions above for Ubuntu and it didn't quite work.
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Remember that Linux distributions are for the most part just bundled software and default configurations. Choosing Ubuntu (or some 'buntu "flavor") is an easy way to get a widely documented default setup going. ↩