Check Your Memory In The Terminal: Part II

Today’s article is all about how you can check your memory in the terminal. If it looks familiar, it’s because I’ve already written “How To: Find The RAM Total In The Terminal“, which covered a couple of ways to check your RAM – all of which were in the terminal. I left the article open for others to share how they check their memory, but nobody left any comments.

In the previous article, I invited people to comment and share other ways to check RAM, RAM total, RAM usage, etc… Seeing as nobody commented, I figured I might as well return to the previous article and throw in a couple more ways to do check your memory in the terminal.

The previous article includes some handy tools, such as the easiest way:

While also mentioning a much more extensive and informative tool:

Both of which are lovely ways to check your memory in the terminal.

This being Linux, there’s also other ways.

Me being me, I figure I might as well share them with you.

After all, it’s yet another article that I can write! So, as unoriginal as this article may sound, there’s also a couple of tools I really want to introduce you to. 

There’s always room for more tools, especially if they’ll help you…

Check Your Memory (in the terminal):

As the line above indicates, you’re going to need an open terminal to do the work in this article. You can open it from your start menu, or you can just press CTRL + ALT + T and your default terminal should open right up.

The first tool we’re going to use is ‘top‘. I think you’ll find top installed on pretty much everything, though some distros are including variants like htop. The venerable top application is a terminal-based task manager and has been with us since 1984.

Anyhow, the command is nice and simple. Just run ‘top’ in the terminal:

The output will look something like this:

using top tto find your memory information
Look up near the top, above the fold, you’ll see the memory information. Pretty easy, isn’t it?

The last two lines of data, above the list of tasks, tell you all you need to know (unless you need a ton of details, I suppose) about your RAM, your RAM usage, what’s buffered, etc… It also tells you about swap, another facet of memory. 

Next we have a lovely command called ‘vmstat‘ a tool for showing virtual memory statistics. This lovely tool has been around since 1985 and has a ton of options. It’s an excellent tool and you’re highly encouraged to use the man vmstat command.

We actually don’t need all those lovely options for this. We don’t have to dig down very far to get the information you need. In fact, once again, you’re going to run the command without a single flag, like so:

The outcome of which is also self-explanatory. It looks like:

vmstat showing information, including ram information.
Look under the line clearly marked memory. See? There it is! There’s the memory info!

Just look under where it’s clearly marked ‘memory’ and you’ll see that you can use this to check your memory. It’s a bit more cryptic as it doesn’t directly show the total – but it does show you the information that’s actually important.

The total doesn’t matter. What really matters is how much RAM you’re using and how much RAM you have free. But, vmstat being vmstat, it will of course give you that information if you want it. If you do want that additional information, just use the --stats flag – like this:

Where you can see an output similar to this;

use the --stats flag to get a ton of memory information about your memory.
It contains not just that, but all sorts of information about your memory!

Pretty sweet, huh?

Closure:

There you have it, a follow-up article that tells you how to check your memory. After all, nobody wanted to add them as comments! Either way, you got to play with a couple of new tools, or at least tools not really mentioned here on this site.

Speaking of the site, the end of my year long project is in less than 2 months. That’s right, I’ve kept this up for this entire time, with a few guest articles in between. I’ll do a meta article, but I have to say that this has been a pretty fun (and educational) project. Maybe we’ll keep it rolling? It seems likely that I will. I quite like writing these things.

Thanks for reading! If you want to help, or if the site has helped you, you can donate, register to help, write an article, or buy inexpensive hosting to start your own site. If you scroll down, you can sign up for the newsletter, vote for the article, and comment.

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How To: Find The RAM Total In The Terminal

Today’s article will show you how to find the RAM total, because that’s basic information everyone might want to know. If you don’t already know how much RAM you have, this is a good article for you. If you’re like me and need to be reminded from time to time, this is also a good article for you!

You might have a computer that doesn’t run as fast as you want, and having not enough RAM may be a cause. Before you install a distro, you should know that distro’s minimum requirements, of which RAM is often one such prerequisite. Maybe you’re upgrading RAM and really want to make sure you know what you have inside? Dunno, but there are reasons why you might want to find the RAM total.

Not all my articles are long, and that includes this one. This one should be pretty quick and easy, suitable for folks just starting out who want to know how much RAM they have.

Find The RAM Total:

This article requires an open terminal, like many other articles on this site. If you don’t know how to open the terminal, you can do so with your keyboard – just press CTRL + ALT + T and your default terminal should open.

With the terminal open, we’ll just use the free command. It looks like this:

The output is obvious and will look similar to this:

free -m in action
The output should be fairly obvious to all readers. The total RAM is listed in the output.

That’s the output from a fairly standard device. It should be obvious, but the column you’re looking for is under ‘total’ and you’re looking for the big number/top row.

You can also check /proc/meminfo for more information. Run the following command for a bunch of data about your installed RAM:

If you take a look at the output, you’ll be looking for the row starting with “MemTotal” in the results. Of course, you can just use ‘grep’ to pull out just the information you want. Try it with this command:

That should do it. It should give you an output that has just the row you’re looking for. Feel free to change ‘MemTotal’ to another row, but remember that it’s case sensitive – like most of Linux.

Closure:

There are surely other ways to find the RAM total, but those are a couple of easy ways to toss into your growing toolbox. This is also another article in the books. It’s just a short article, but it’s an article nonetheless. 

Thanks for reading! If you want to help, or if the site has helped you, you can donate, register to help, write an article, or buy inexpensive hosting to start your own site. If you scroll down, you can sign up for the newsletter, vote for the article, and comment.

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