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windows:wsl [2020-05-10] – dcaiwindows:wsl [2021-02-23] (current) – ↷ Links adapted because of a move operation 108.162.250.75
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 +===== Windows Subsystem for Linux (WSL) =====
 +Windows Subsystem for Linux (WSL) is a compatibility layer for running Linux binary executables (in ELF format) natively on Windows 10 and Windows Server 2019.
  
 +In May 2019, WSL 2 was announced, introducing important changes such as a real Linux kernel, through a subset of Hyper-V features. Since June 2019, WSL 2 is available to Windows 10 customers through the Windows Insider program, including the Home edition.
 +
 +==== upgrading to WSL 2 ====
 +I upgraded to wsl2 today, it runs a lightweight Hyper-V VM with a real Linux kernel so there is no syscall translation layer needed, all programs work perfectly now, htop for example, doesn't work in wsl 1 before.
 +
 +The upgrade is straight forward: ''wsl --set-version Ubuntu 2'', it took a while to upgrade, I guess it copies large amount files to a new partition, I find turning off real time virus and thread protection in windows 10 could speed thing up, and ''wsl -l -v'' could list all workloads in the system.
 +
 +Files under /mnt/c, mnt/d etc, are fully maintained by use of a filesystem bridge using the [[https://en.wikipedia.org/wiki/9P_(protocol)|9P protocol]].
 +
 +To install wsl fresh, please follow: https://docs.microsoft.com/en-us/windows/wsl/install-win10
 +
 +==== bootstrapping new ubuntu installation ====
 +
 +scripts: https://gist.github.com/dcai/c5418bcf9203cf19c93a
 +
 +other cli commands might help: [[cli:start]]

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