CMD: How to find numeric value of total memory in Windows in one line?

Question

In Linux we can:

grep 'MemTotal' /proc/meminfo | sed -e 's/MemTotal://' -e 's/ kB//'

What are the alternatives in Windows command prompt and PowerShell? I will run this command from ruby.

I have tried using:

wmic memorychip get /VALUE | findstr "Capacity"

to get the prefixed output of available bytes. But I need to get only numeric value out of it. And I could not find anything like sed in Windows.

Have you made any effort to find out yourself? Is there anything in particular you're stuck with? — arco444
– arco444, Commented Mar 3, 2015 at 13:23
An easy google nets a WMI query (Get-WmiObject Win32_PhysicalMemory | measure-object Capacity -sum).sum/1gb — Matt
– Matt, Commented Mar 3, 2015 at 13:32
@arco444, yes, I have the wmic memorychip get /VALUE | findstr "Capacity" command giving me prefixed output of available bytes. But I need to get only numeric value out of it. And I could not find anything like sed in windows, so I could complete this one-liner. — Aleksandr Makov
– Aleksandr Makov, Commented Mar 3, 2015 at 13:35
@arco444 but I also assume that command will fail on localized Windows environments. — Aleksandr Makov
– Aleksandr Makov, Commented Mar 3, 2015 at 13:35
Pure CLI solution wmic memorychip get Capacity|find /I /V "y". Use find or findstr command, in this case the output should be the same — JosefZ
– JosefZ, Commented Mar 3, 2015 at 14:28

Matt · Accepted Answer · 2015-03-03 14:09:13Z

1

For a simple PowerShell answer this simple approach is brought to you by "Deranged PowerShell Zealot" from BrianDesmond.com. Look at the comments and not the blog post.

(Get-WmiObject Win32_PhysicalMemory | measure-object Capacity -sum).sum/1gb

That will return the GB value of memory installed on the computer. You can substitute 1gb for 1mb depending on your output needs.

If you are looking for a batch type solution consider adding that tag but understand that those solutions will most likely require for loops to parse the string tokens (I dont know for sure) so getting a one liner might not be as clean as you expect.

answered Mar 3, 2015 at 14:09

Matt

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