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windowsversionwindows-subsystem-for-linux

How to check which build of WSL2 am I running?

Windows Subsystem for Linux 2 is great tool, but has some issues as it's still a work in progress. I'm not on Insiders Program, so I don't get newest builds. I need to deal with some memory issues which are supposed to be fixed already, but I can't figure out if I already have required build or do I need to do some upgrading or is it available only for Insiders at the moment.

My Windows build is 19042.985 (v.20H2)

On Settings -> Apps there's WSL described with 4.19.104

So which build am I using?

Solution

  • I think I found it by running this command in Powershell:

    (gcm wsl).Version

    gcm is short for Get-Command which gives basic information about command, including full version:

    Major  Minor  Build  Revision
-----  -----  -----  --------
10     0      19041  488

    So my build is 19041.

    4.19.104, seen on Settings -> Apps, is the version of the WSL kernel.

    Another way available in Ubuntu (don't know about other distributions) is to run wslfetch command which prints basic information including build number: wslfetch