測試環境為 Windows10 Pro (Version :1809 , Build :17763)
Microsoft Windows [Version 10.0.17763.737] (c) 2018 Microsoft Corporation. All rights reserved. C:\Users\ben>ver Microsoft Windows [Version 10.0.17763.737]
WSL1 架構圖如下 (圖來至 https://www.youtube.com/watch?v=lwhMThePdIo )
WSL2 的架構就不一樣了,想試用 WSL2 請參考官方網站 – https://docs.microsoft.com/zh-tw/windows/wsl/wsl2-install
WSL 可以透過指令 (PowerShell) 或是用圖形介面 (Windows 設定) 安裝 WSL (Windows Subsystem for Linux) ,須重新開機.
- 指令 (PowerShell)
透過 Windows PowerShell 執行下面指令需要有 Administrator 權限 (Windows PowerShell 右鍵 Run as Administrator)Windows PowerShell Copyright (C) Microsoft Corporation. All rights reserved. PS C:\Windows\system32> Enable-WindowsOptionalFeature -Online -FeatureName Microsoft-Windows-Subsystem-Linux >> Do you want to restart the computer to complete this operation now? [Y] Yes [N] No [?] Help (default is "Y"): y
- 圖形介面 (Windows 設定)
重開機後雖然已經安裝好了 WSL ,但還沒有安裝任何 Linux 系統,需至 Windows Store 上下載常用的 Linux 映像檔(我選擇的是 Ubuntu 18.04 LTS).
下載完成按下 launch (啟動),第一次需要設定帳號與密碼.
Installing, this may take a few minutes... Please create a default UNIX user account. The username does not need to match your Windows username. For more information visit: https://aka.ms/wslusers Enter new UNIX username: ben Enter new UNIX password: Retype new UNIX password: passwd: password updated successfully Installation successful! To run a command as administrator (user "root"), use "sudo <command>". See "man sudo_root" for details.
除了 Linux 資料夾外還有 Windows 本身的磁碟也會被掛載進來 /mnt/c
ben@DESKTOP-18MHRKT:~$ mount rootfs on / type lxfs (rw,noatime) none on /dev type tmpfs (rw,noatime,mode=755) sysfs on /sys type sysfs (rw,nosuid,nodev,noexec,noatime) proc on /proc type proc (rw,nosuid,nodev,noexec,noatime) devpts on /dev/pts type devpts (rw,nosuid,noexec,noatime,gid=5,mode=620) none on /run type tmpfs (rw,nosuid,noexec,noatime,mode=755) none on /run/lock type tmpfs (rw,nosuid,nodev,noexec,noatime) none on /run/shm type tmpfs (rw,nosuid,nodev,noatime) none on /run/user type tmpfs (rw,nosuid,nodev,noexec,noatime,mode=755) binfmt_misc on /proc/sys/fs/binfmt_misc type binfmt_misc (rw,noatime) C: on /mnt/c type drvfs (rw,noatime,uid=1000,gid=1000,case=off) ben@DESKTOP-18MHRKT:~$
下次要執行可以透過 執行(Run 快捷鍵 Win+R ), 輸入 bash, wsl 或是 ubuntu1804 都可以啟動 Linux Bash.
bash ( C:\Windows\System32\bash.ex )與 wsl ( C:\Windows\System32\wsl.exe ),都會進入預設的 Linux 版本. 唯有指定 ubuntu1804 ( C:\Users\ben\AppData\Local\Microsoft\WindowsApps\ubuntu1804.exe ),指定預設方式如下.
PS C:\Windows\system32> wslconfig
Performs administrative operations on Windows Subsystem for Linux
Usage:
/l, /list [/all]
Lists registered distributions.
/all - Optionally list all distributions, including distributions that
are currently being installed or uninstalled.
/s, /setdefault <DistributionName>
Sets the distribution as the default.
/t, /terminate <DistributionName>
Terminates the distribution.
/u, /unregister <DistributionName>
Unregisters the distribution.
/upgrade <DistributionName>
Upgrades the distribution to the WslFs file system format.
PS C:\Windows\system32> wslconfig /l
Windows Subsystem for Linux Distributions:
Ubuntu-18.04 (Default)
也可以透過 wsl 指令來完成.
C:\Users\ben>wsl --help
Copyright (c) Microsoft Corporation. All rights reserved.
Usage: wsl.exe [Argument] [Options...] [CommandLine]
Arguments to run Linux binaries:
If no command line is provided, wsl.exe launches the default shell.
--exec, -e <CommandLine>
Execute the specified command without using the default Linux shell.
--
Pass the remaining command line as is.
Options:
--distribution, -d <DistributionName>
Run the specified distribution.
--user, -u <UserName>
Run as the specified user.
Arguments to manage Windows Subsystem for Linux:
--export <DistributionName> <FileName>
Exports the distribution to a tar file.
The filename can be - for standard output.
--import <DistributionName> <InstallLocation> <FileName>
Imports the specified tar file as a new distribution.
The filename can be - for standard input.
--list, -l [Options]
Lists distributions.
Options:
--all
List all distributions, including distributions that are currently
being installed or uninstalled.
--running
List only distributions that are currently running.
-setdefault, -s <DistributionName>
Sets the distribution as the default.
--terminate, -t <DistributionName>
Terminates the distribution.
--unregister <DistributionName>
Unregisters the distribution.
--upgrade <DistributionName>
Upgrades the distribution to the WslFs file system format.
--help
Display usage information.
WSL1 並非使用 Hyper-V 的虛擬化技術( WSL2 使用 Hyper-V 的虛擬化技術來運行, 請參考 – https://benjr.tw/102092 ),而是透過 Windows Kernel API 轉譯的方式來運行,那安裝好 WSL (Windows Subsystem for Linux) 可以做什麼?
在 Windows 下的 PowerShell 提供不少指令工具可供使用,如果習慣 Linux 的 command line 工具,我們可以在 Windows 環境透過 WSL (Windows Subsystem for Linux) 來執行 Linux 的命令列工具.
執行方式如下:
- wsl command
- bash -c “command”
- ubuntu1804 run command
常見範例：
Windows Powershell 下 執行結果由 Linux grep 來過濾處理.
PS C:\Windows\system32> Get-WindowsOptionalFeature -Online -FeatureName SMB1Protocol | wsl grep -i state State : Disabled
透過 Linux 的 find 查詢指定檔案(目錄)名稱
PS C:\Windows\system32> wsl find /mnt/c/users -name ben
/mnt/c/users/ben
find: ‘/mnt/c/users/ben/AppData/Local/Packages/CanonicalGroupLimited.Ubuntu18.04onWindows_79rhkp1fndgsc/LocalState/rootfs’: Permission denied
find: ‘/mnt/c/users/ben/AppData/Local/Packages/CanonicalGroupLimited.Ubuntu18.04onWindows_79rhkp1fndgsc/LocalState/temp/{0820fb9f-f68b-4433-9421-643f095faf39}’: Permission denied