I want to see if I'm running a particular wsl distribution (Windows 10 Home, WSL 2):

我想知道我是否正在运行特定的WSL发行版(Windows 10 Home，WSL 2)：

PS C:\Users\User> wsl --list --running
Windows Subsystem for Linux Distributions:
Ubuntu (Default)
MyDistro
PS C:\Users\User> wsl --list --running | Select-String -Pattern "MyDistro"
PS C:\Users\User>

No output. I used Get-Member to see that the output is a string; if I run it through something like | Out-String -stream it makes no difference.

无输出。我使用Get-Members来查看输出是一个字符串；如果我通过类似|out-string-stream这样的内容运行它，也没有什么不同。

I can get a match with Select-String . or Select-String .* but it matches everything, which isn't helpful.

我可以用选择字符串进行匹配。或者Select-String.*，但它匹配所有内容，这是没有帮助的。

Yes, I want to see if there's a running distro with a particular name. Is there a better way to do that in PowerShell?

是的，我想看看是否有一个特定名称的运行发行版。在PowerShell中有没有更好的方法来做到这一点？

Inexplicably, wsl --list --running produces UTF-16LE-encoded ("Unicode"-encoded) output by default instead of respecting the console's active code page, which defaults to the legacy system locale's OEM code page.

令人费解的是，运行wsl--list--默认情况下会生成UTF-16LE编码(“Unicode”编码)输出，而不是遵循控制台的活动代码页，后者默认为传统系统区域设置的OEM代码页。

Update: As noted in Vimes' answer, v0.64 and above of wsl.exe (verify via the first line output by wsl.exe --version) now support setting the WSL_UTF8 environment variable to 1 to make wsl.exe output UTF-8-encoded output:

更新：正如Vimes的回答中指出的，wsl.exe的v0.64及更高版本(通过wsl.exe--Version的第一行输出进行验证)现在支持将WSL_UTF8环境变量设置为1，以使wsl.exe输出UTF-8编码的输出：

$env:WSL_UTF8 = 1
wsl --list --running | Select-String -Pattern MyDistro

This works, as long as your distro names comprise ASCII-range characters only (which seems likely), given that UTF-8 is a superset of ASCII, just like the OEM code pages are.

If you happen to have configured your system to use UTF-8 system-wide, (in which case both the OEM and the ANSI code pages are UTF-8 - see this answer), the above solution works even with non-ASCII-range characters.

只要您的发行版名称只包含ASCII范围的字符(这似乎是可能的)，这就是可行的，因为UTF-8是ASCII的超集，就像OEM代码页一样。如果您恰好将系统配置为在系统范围内使用UTF-8(在这种情况下，OEM和ANSI代码页都是UTF-8--请参阅此答案)，则上述解决方案甚至适用于非ASCII范围的字符。

Otherwise, in the (unlikely) event that your distros contain non-ASCII-range characters (e.g. accented characters such as é), use the second workaround below.

否则，如果(不太可能)您的发行版包含非ASCII范围的字符(例如，é等重音字符)，请使用下面的第二个解决方法。

Without use of $env:WSL_UTF8:

不使用$env：wsl_utf8：

A quick-and-dirty workaround - which assumes that all running distros are described only with ASCII-range characters (which seems likely) - is to use the following:

一种快速而肮脏的解决方法-假设所有运行的发行版仅使用ASCII范围字符描述(看起来很可能)-使用以下内容：

(wsl --list --running) -replace "`0" | Select-String -Pattern MyDistro

A proper workaround that supports all Unicode characters requires more effort:

支持所有Unicode字符的正确解决方法需要付出更多努力：

$prev = [Console]::OutputEncoding; [Console]::OutputEncoding = [System.Text.Encoding]::Unicode
wsl --list --running | Select-String -Pattern MyDistro
[Console]::OutputEncoding = $prev

I just found that $env:WSL_UTF8=1 makes wsl.exe output UTF8. Select-String and More seem to work now!

我刚刚发现$env：WSL_UTF8=1使wsl.exe输出UTF8。SELECT-STRING和更多似乎现在起作用了！

(Prevoius answer: If you don't need regex then Select-String -simplematch seems to work.)

（Prevoius回答：如果你不需要正则表达式，那么Select-String -simplematch似乎可以工作。