Differences

This shows you the differences between two versions of the page.

--- other:win10wsl [2022/09/07 17:13] – [Base installation] Added screenshots of installed Ubuntu in MS Store and app list jypeter
+++ other:win10wsl [2022/09/16 11:20] – [Package management] Started rewriting jypeter
@@ Line 45: / Line 45: @@
 Once you have verified that your Windows is recent enough, you should also:
-  * Your should really **install the [[other:win10apps#windows_terminal|Windows terminal]]**, because it will be one of useful the ways to open ''Ubuntu'' terminals, once ''Ubuntu'' is installed
+  * **Install the [[other:win10apps#windows_terminal|Windows terminal]]**
-  * **Know how to use copy-paste** in:
+    * Once //Ubuntu// is installed, there will be additional ways to open [[other:win10wsl#opening_a_terminal|Linux terminals]]
-    * a //Windows Terminal//: [[https://docs.microsoft.com/en-us/windows/terminal/selection|Selecting text in Windows Terminal]]
+  * **Know how to use copy-paste** in a //Windows Terminal//, a //PowerShell// or a ''cmd'' interpreter
-    * an old ''cmd'' command prompt or a //PowerShell//: FIXME
+    * It should work more or less the same way everywhere as in a [[other:win10apps#windows_cmd_command_interpreter|cmd interpreter]]
-  * It will be useful to **be able to [[other:win10config#displaying_hidden_folders_and_files_and_the_files_extension|see hidden folders and files]]**
+  * Follow the instructions to **be able to [[other:win10config#displaying_hidden_folders_and_files_and_the_files_extension|see hidden folders and files i n the Windows explorer]]**
   * **Have some basic knowledge of Linux**...
     * Get some [[other:newppl:starting#useful_documentation_for_beginners|basic Linux documentation]] if required
@@ Line 238: / Line 238: @@
     * {{ :other:ubuntu_applications.png?direct&400 |}}
-  * Get some basic information about your new ''Ubuntu'' installation
+  * Get some information about your new ''Ubuntu'' installation
-    * <code>stdu@sadira034:~$ lsb_release -a
+    * <code>$ lsb_release -d
-No LSB modules are available.
+Description:    Ubuntu 20.04.5 LTS</code>
-Distributor ID: Ubuntu
+      * [[other:win10wsl#linux_version_installed|More information]] example
-Description:    Ubuntu 20.04 LTS
+    * Disk usage example
-Release:        20.04
+    * <code>$ df -h
-Codename:       focal
-stdu@sadira034:~$ uname -a
-Linux sadira034 5.10.16.3-microsoft-standard-WSL2 #1 SMP Fri Apr 2 22:23:49 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux
-stdu@sadira034:~$ cat /proc/version
-Linux version 5.10.16.3-microsoft-standard-WSL2 (oe-user@oe-host) (x86_64-msft-linux-gcc (GCC) 9.3.0, GNU ld (GNU Binutils) 2.34.0.20200220) #1 SMP Fri Apr 2 22:23:49 UTC 2021
-stdu@sadira034:~$ df -h
 Filesystem      Size  Used Avail Use% Mounted on
 /dev/sdb        251G  1.1G  238G   1% /
@@ Line 313: / Line 304: @@
 Description:    Ubuntu 20.04.4 LTS
 Release:        20.04
-Codename:       focal
+Codename:       focal</code>
+    * [[other:win10wsl#linux_version_installed|More installed version information]]
-stdu@sadira034:/usr/lib/wsl/drivers$ cat /etc/*release*
-DISTRIB_ID=Ubuntu
-DISTRIB_RELEASE=20.04
-DISTRIB_CODENAME=focal
-DISTRIB_DESCRIPTION="Ubuntu 20.04.4 LTS"
-NAME="Ubuntu"
-VERSION="20.04.4 LTS (Focal Fossa)"
-ID=ubuntu
-ID_LIKE=debian
-PRETTY_NAME="Ubuntu 20.04.4 LTS"
-VERSION_ID="20.04"
-HOME_URL="https://www.ubuntu.com/"
-SUPPORT_URL="https://help.ubuntu.com/"
-BUG_REPORT_URL="https://bugs.launchpad.net/ubuntu/"
-PRIVACY_POLICY_URL="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy"
-VERSION_CODENAME=focal
-UBUNTU_CODENAME=focal</code>
     * [[other:win10wsl#updating_wsl_and_ubuntu|More details about updating WSL and/or Ubuntu]] (you can safely skip this for now)
@@ Line 381: / Line 355: @@
 ==== Opening a terminal ====
-  * Check the next sections to find out the different ways to open terminals
+  * Read the sub-sections below to find out the different ways to open //terminals//
-  * Opening the first terminal will start WSL+Ubuntu
+  * Opening the first terminal (after opening a regular Windows session) will start WSL+Ubuntu
+    * The next terminals will open instantly (because Ubuntu is already running)
   * Closing all terminals will not stop WSL+Ubuntu. Read the [[#rebooting_wsl|rebooting WSL section]] if you need a clean start of WSL without rebooting Windows
@@ Line 389: / Line 364: @@
 === The default terminal ===
-The **Default WSL+Ubuntu //terminal//** is basically a //bash// shell running inside a regular Windows ''cmd'' text console. You do not need to have an //X server// running to use it!
+<WRAP center round tip 60%>
+The default terminal will be available without installing extra applications like ''WSLtty'' or the ''Windows Terminal''. It will work for testing WSL, but it is **not recommended** if you want to work comfortably
+</WRAP>
+The **Default WSL+Ubuntu //terminal//** is basically a //bash// shell running inside a regular Windows ''cmd'' text console. You do not need to have an [[other:x_conf#using_an_x_server_on_windows|X server]] running to use it!
 There are several ways to open a default terminal:
-  * Select //Ubuntu// from the ''Start'' menu
+  * Type ''wsl''+''<Enter>'' in the (Cortana) Search field on the task bar
-  * Click on the //Ubuntu// icon on the task bar
+  * The other ways listed below **will only work as supposed if you have not [[other:win10wsl#restoring_or_relocating_a_linux_installation|restored or relocated a Linux installation]]!**\\ If you are using a restored/relocated installation, this will trigger a re-installation of the default Ubuntu on ''C:\''. Not a major problem, but it will use some unwanted space on ''C:\'' and you will need to [[other:win10wsl#uninstalling_wsl_or_a_distribution|use 'wsl --unregister Ubuntu']] to remove this unwanted version
-    * if you don't have a //Ubuntu// icon on the task bar yet: right-click on the //Ubuntu// icon (in the ''Start'' menu) -> More -> Pin to the task bar
+    * Type ''ubuntu''+<Enter> in the (Cortana) Search field on the task bar
-    * to open more terminals: right-click on the //Ubuntu// icon on the task bar -> Ubuntu
+    * Select //Ubuntu// from the ''Start'' menu
-  * Type ''ubuntu''+<Enter> or ''wsl''+''<Enter>'' in the (Cortana) Search field on the task bar
+    * Click on the //Ubuntu// icon on the task bar
+      * if you don't have a //Ubuntu// icon on the task bar yet: right-click on the //Ubuntu// icon (in the ''Start'' menu) -> More -> Pin to the task bar
+      * to open more terminals: right-click on the //Ubuntu// icon on the task bar -> Ubuntu
 == Copy/paste in the default terminal ==
-Follow the steps in [[https://blogs.msdn.microsoft.com/commandline/2018/04/13/copy-and-paste-arrives-for-linuxwsl-consoles/|Copy and Paste arrives for Linux/WSL Consoles]] and you will then be able to **copy/paste by using ''Shift+Ctrl+C/V''**
+Check this [[other:win10apps#windows_terminal|Windows Terminal]] section
-  * The //QuickEdit mode// should already be selected by default and you can also:
-    * **select** text with the left mouse button
-    * **paste** the selected text with the right mouse button (click **twice** after a new selection)
-  * Use ''Alt''+''<Enter>'' to toggle the terminal to full screen (maybe more useful options [[https://docs.microsoft.com/en-us/previous-versions/orphan-topics/ws.11/mt427362(v=ws.11)|here?]])
 === The WSLtty terminal ===
-<note tip>
+<WRAP center round tip 60%>
-  * This is the recommended (by JYP) option for now
-  * If you can't open a terminal after Windows upgrades from WSL to WSL v2, get and install the latest version of WSLtty !
+  * This is **the recommended (by JYP) option for now**, until we can use regular Linux select-copy/paste in the Windows Terminal ([[https://github.com/microsoft/terminal/issues/7646|Feature request: add xterm-style select/copy/paste options]])
-</note>
-[[https://github.com/mintty/wsltty|WSLtty]] allows you to use the efficient //Mintty// as a terminal for WSL. **You do not need to have an //X server// running to use it!**
+  * If you can't open a ''WSLtty'' terminal after upgrading from ''WSL'' to ''WSL 2'', install the latest version of WSLtty !
+</WRAP>
-  * Download and execute the latest [[https://github.com/mintty/wsltty/releases|64bit installer]] (the most recent ''wsltty-*-install-x86_64.exe'' file)
-  * After installing, you will get several ways to open a terminal:
-    * Double-click on the ''WSL terminal'' icon on the desktop
+[[https://github.com/mintty/wsltty|WSLtty]] allows you to use the efficient //Mintty// as a terminal for WSL. **You do not need to have an [[other:x_conf#using_an_x_server_on_windows|X server]] running to use it!**
-    * ''U''=>''Ubuntu terminal'' and ''W''=>''WSL Terminal'' in the ''Start'' menu
-      * There is also a ''W''=>''WSLtty'' folder, than you don't really need
+  * Use [[https://github.com/mintty/wsltty#windows-package-manager|winget]] (in a PowerShell) to install WSLtty
+    * <code>PS C:\Users\your_login> winget install wsltty
+Trouvé WSLtty [Mintty.WSLtty] Version 3.6.0
+[...]
+Installé correctement</code>
+  * After installing WSLtty, you will get **several new ways to open a terminal**:
+    * **A ''WSL terminal'' icon on the desktop, that will be //The Way to open a terminal//**
+    * ''Start'' => ''U'' => ''Ubuntu terminal'' (or ''Ubuntu_custom terminal'' or something similar if you have [[other:win10wsl#restoring_or_relocating_a_linux_installation|restored/relocated a Linux installation]])
+    * ''Start'' => ''W'' => ''WSL Terminal'' in the ''Start'' menu
+      * There is also a ''W'' => ''WSLtty'' folder, than you probably will not need (more details in [[https://github.com/mintty/wsltty#configuration|Configuration]]), except possibly ''configure WSL shortcuts'' (//run after adding or removing WSL distributions, in order to create the respective set of shortcuts in the Start menu//)
   * Open a terminal and right-click in it to check the available options
+    * **Recommended //text// options**:
+      * use the ''Text'' option to select the nice //Cascadia Code// font bundled with the [[other:win10apps#windows_terminal|Windows Terminal]]
+      * if you don't automatically get the ''en_US.UTF8'' localization in WSLtty when trying to [[other:win10wsl#specifying_a_correct_system_language|specify a correct system language]], explicitly force //Locale//=''en_US'' and //Character set//=''UTF-8'' in the text options
+      * {{ :other:wsltty_text_options.png?direct&250 |}}
     * You can access even more options with CTRL+right-click
     * You can cycle between the open WSLtty terminals with CTRL+Tab and Shift+CTRL+Tab
-  *  [[https://github.com/mintty/mintty/wiki|Technical stuff]] (on the Mintty wiki)
+  * Extra [[https://github.com/mintty/mintty/wiki|technical stuff]] (on the Mintty wiki)
-=== The new Windows Terminal ===
-Microsoft is working on a powerful replacement of the old ''cmd'' terminal! Check [[https://github.com/microsoft/terminal|Windows Terminal, Console and Command-Line @ github]]
+=== The Windows Terminal ===
-Note: the //Windows Terminal// looks really promising, but will be nice when there is a GUI for editing the options (rather the editing a //json// file with a text editor...) and a way to select //xterm-style// copy-pasting. See [[https://github.com/microsoft/terminal/issues/7646|Feature request: add xterm-style select/copy/paste options]]
+The [[other:win10apps#windows_terminal|Windows Terminal]] is really nice and powerful, and will become the recommended (by JYP) option as soon as we can use regular Linux select-copy/paste ([[https://github.com/microsoft/terminal/issues/7646|Feature request: add xterm-style select/copy/paste options]])
-  * [[https://aka.ms/terminal|Getting the Windows Terminal from the Microsoft Store]]
-  * [[https://docs.microsoft.com/en-us/windows/terminal/|Documentation]]
 === Terminals started from Linux ===
-You can install additional //graphical// terminals inside the Linux running in WSL, but **you will need to have a running //X server// if you want to open them**. In these terminals, the //usual// Linux copy/paste rules will apply!
+You can install additional //graphical// terminals inside the Linux running in WSL, but **you will need to have a running [[other:x_conf#using_an_x_server_on_windows|X server]] if you want to open them**. In these terminals, the //usual// Linux copy/paste rules will apply!
 == xterm ==
@@ Line 450: / Line 436: @@
   * Start from another terminal with: ''xfce4-terminal &''
-==== Location of the files ====
+==== Where are the files? ====
-You can optionally read the detailed [[https://blogs.msdn.microsoft.com/wsl/2016/06/15/wsl-file-system-support/|WSL File System Support]] page if you want to (try to) understand how things work and how both systems can share files.
+=== Accessing Linux files from the Windows Explorer ===
-=== Linux files seen from Windows ===
+  * You can access the Linux files in ''/'' from Windows by opening the //virtual// ''\\wsl$'' path in the Windows explorer
-  * You can access the Linux files in ''/'' from Windows by opening the //virtual// ''\\wsl$'' path in the Windows explorer (since [[https://docs.microsoft.com/en-us/windows/wsl/release-notes#build-18342|Windows build 18342]])
     * Your Linux //home// directory is located in ''\\wsl$\Ubuntu\home\<your_login>''
+    * There will be some content in ''\\wsl$'' only if a Linux installation is running (i.e. it shows as //Running// in ''wsl -l -v'')
+    * It's useful to [[[other:win10config#local_linux_folders|create a shortcut to wsl$ on the desktop]]
-  * The content of the Ubuntu ''/'' directory is actually located in the following //hidden// sub-directory of the user's Windows //home// directory: ''C:\Users\<your_login>\AppData\Local\Packages\CanonicalGroupLimited.UbuntuonWindows_79rhkp1fndgsc\LocalState\rootfs''
+=== Accessing Windows files from Linux ===
-<note important>[[https://blogs.msdn.microsoft.com/commandline/2016/11/17/do-not-change-linux-files-using-windows-apps-and-tools/|Do not change Linux files in '/' from Windows!]] (it's safe **only** if you use the ''\\wsl$'' path)
+<WRAP center round tip 60%>
+When you are in a Windows //explorer// window, you can directly open a Linux terminal in a specific directory by holding Shift and right-clicking on a directory and selecting //Ouvrir l'interpréteur de commandes Linux ici// (//Open the Linux command line here//?) in the context menu.</WRAP>
-If you need to easily update files from both Linux and Windows, put them in a regular Windows directory (not in the hidden directory mentioned above, where the Linux system is installed)</note>
-=== Windows files seen from Linux ===
-Note: When you are in an explorer window, you can open a Windows terminal with Linux by holding Shift and right-clicking on a directory and choosing Linux in the context menu.
 The Windows partitions are mounted under ''/mnt'' in Linux:
@@ Line 473: / Line 454: @@
 <code>$ df -h
 Filesystem      Size  Used Avail Use% Mounted on
-rootfs          111G   30G   82G  27% /
+/dev/sdb        251G  1.5G  237G   1% /
-none            111G   30G   82G  27% /dev
+[...]
-none            111G   30G   82G  27% /run
+C:\             472G  121G  351G  26% /mnt/c
-none            111G   30G   82G  27% /run/lock
+D:\             480G  4.2G  476G   1% /mnt/d</code>
-none            111G   30G   82G  27% /run/shm
-none            111G   30G   82G  27% /run/user
-C:              111G   30G   82G  27% /mnt/c
-H:              366G  138M  366G   1% /mnt/h</code>
 Read the [[#mounting_disks_and_network_drives|Mounting disks and network drives]] section if you want to access remote server disks on your local network, or just want to access USB disks/sticks on your local computer.
@@ Line 487: / Line 464: @@
   * The ''wslpath'' command can be used to make Windows<->Linux path conversion
+  * FIXME More technical WSL disks information (move the disk technical information to the advanced usage section, and link to it)
 ==== Linux version installed ====
+You can use the following commands to get some information about WSL and the currently installed Linux
 <code>$ date
-Thu Feb 20 11:18:57 CET 2020
+Tue Sep 13 16:48:10 CEST 2022
+$ env | grep WSL
+WSL_DISTRO_NAME=Ubuntu_custom
+WSL_INTEROP=/run/WSL/12_interop
+WSL_GUEST_IP=192.168.113.203
+WSLENV=
+WSL_HOST_IP=192.168.112.1
 $ lsb_release -a
 No LSB modules are available.
 Distributor ID: Ubuntu
-Description:    Ubuntu 18.04.4 LTS
+Description:    Ubuntu 20.04.5 LTS
-Release:        18.04
+Release:        20.04
-Codename:       bionic
+Codename:       focal
 $ cat /proc/version
-Linux version 4.4.0-18362-Microsoft (Microsoft@Microsoft.com) (gcc version 5.4.0 (GCC) ) #476-Microsoft Fri Nov 01 16:53:00 PST 2019
+Linux version 5.10.102.1-microsoft-standard-WSL2 (oe-user@oe-host) (x86_64-msft-linux-gcc (GCC) 9.3.0, GNU ld (GNU Binutils) 2.34.0.20200220) #1 SMP Wed Mar 2 00:30:59 UTC 2022
 $ uname -a
-Linux some_machine_name 4.4.0-18362-Microsoft #476-Microsoft Fri Nov 01 16:53:00 PST 2019 x86_64 x86_64 x86_64 GNU/Linux</code>
+Linux sadira034 5.10.102.1-microsoft-standard-WSL2 #1 SMP Wed Mar 2 00:30:59 UTC 2022 x86_64 x86_64 x86_64 GNU/Linux
+$ cat /etc/*release*
+DISTRIB_ID=Ubuntu
+DISTRIB_RELEASE=20.04
+DISTRIB_CODENAME=focal
+DISTRIB_DESCRIPTION="Ubuntu 20.04.5 LTS"
+NAME="Ubuntu"
+VERSION="20.04.5 LTS (Focal Fossa)"
+ID=ubuntu
+ID_LIKE=debian
+PRETTY_NAME="Ubuntu 20.04.5 LTS"
+VERSION_ID="20.04"
+HOME_URL="https://www.ubuntu.com/"
+SUPPORT_URL="https://help.ubuntu.com/"
+BUG_REPORT_URL="https://bugs.launchpad.net/ubuntu/"
+PRIVACY_POLICY_URL="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy"
+VERSION_CODENAME=focal
+UBUNTU_CODENAME=focal</code>
 ==== Ubuntu packages installed ====
@@ Line 520: / Line 525: @@
-$ dpkg --list > /mnt/c/Scratch/jypeter/Ubuntu_Installed_List_`date +"%y-%m-%d"`.txt
+$ dpkg --list > /mnt/c/Scratch/your_login/Ubuntu_Installed_List_`date +"%y-%m-%d"`.txt
-$ wc -l /mnt/c/Scratch/jypeter/Ubuntu_Installed_List_*.txt
+$ wc -l /mnt/c/Scratch/your_login/Ubuntu_Installed_List_*.txt
-/mnt/c/Scratch/jypeter/Ubuntu_Installed_List_22-08-29.txt</code>
+/mnt/c/Scratch/your_login/Ubuntu_Installed_List_22-08-29.txt</code>
 Full (example) list of installed packages: {{ :other:ubuntu_installed_list_22-08-29.txt |}}
@@ Line 530: / Line 535: @@
 Use the following to update your ubuntu installation:
-<code>$ sudo -s
+''$ sudo apt update && sudo apt upgrade''
+or <code>$ sudo -s
 $ apt-get update
 $ apt-get upgrade</code>
@@ Line 546: / Line 554: @@
 ===== Getting ready for some real work =====
-<note important>We often assume below that you are using the **root** account (''sudo -s''), or ''sudo'' when executing the ''apt*'' installation commands, and othe admin commands</note>
+<note>We often assume below that you are using the **root** account (with ''sudo -s'', or ''sudo'') when executing the ''apt*'' installation commands, and other //admin// commands</note>
-==== Specifying correctly the display language ====
+==== Create a backup before starting ====
-WSL will automatically try to use in the terminals the same language as the one used by the Windows 10 computer ([[https://docs.microsoft.com/en-us/windows/wsl/troubleshooting#changing-the-display-language|ref]]), but this could lead later to some difficult to debug **side-effects** when you connect to remote Linux servers (e.g. the ''sort'' command may give different results !).
+Nothing will go wrong, but it does not hurt to [[other:win10wsl#backup_of_a_full_linux_installation|save an image of your full installation]], in case you want to try some really different settings later.
+==== Specifying a correct system language ====
-It is **safer** to force the system to use a //standard// English version
+WSL will automatically try to use in the terminals the same language as the one used by the Windows computer, but this could lead later to some difficult to debug **side-effects** when you connect to remote Linux servers (e.g. the ''sort'' command may give different results !).
+It is **safer** to [[https://docs.microsoft.com/en-us/windows/wsl/troubleshooting#changing-the-display-language|force the Linux installation to use a standard English localization]]. The ''update-locale'' command will change the content of the ''/etc/default/locale'' file
 <code>$ sudo update-locale LANG=en_US.UTF8
 $ echo $LANG
 en_US.UTF8
+$ locale -v
+LANG=en_US.UTF8
+LANGUAGE=
+LC_CTYPE="en_US.UTF8"
+[...]
+LC_ALL=
 </code>
+After updating the system //localization// (and possibly restarting ''wsl'' with ''%%wsl --shutdown%%''), open the [[other:win10wsl#opening_a_terminal|available terminals]] and type ''echo $LANG'' in order to check that are indeed getting ''en_US.UTF8''
+If you are still not getting ''en_US.UTF8'' in some terminals (e.g. you are still getting ''C.UTF-8''), you can check if you can override the //localization// options in the terminals settings. Check the [[other:win10wsl#the_wsltty_terminal|Text options of the WSLtty terminals]]
 ==== Package management ====
+=== How does it work ? ===
+  * **Ubuntu applications** are distributed through package files in **//Debian// format** (''.deb'' files) that are found in [[https://help.ubuntu.com/community/Applications#Software_repositories|software repositories]]
+  * High level package management tools such as ''aptitude'' or ''synaptic'' rely on ''apt'' which, itself, relies on ''dpkg'' to manage the packages in the system
+    * The ''apt'' tool merges functionality of ''apt-get'' and ''apt-cache'' and by default has a fancier colored output format, making it more pleasant for humans. For usage in scripts or advanced use cases, ''apt-get'' is still preferable or needed
+    * ''apt*'' tools and ''dpkg'' are pre-installed on Ubuntu
+    * [[https://www.debian.org/doc/manuals/debian-faq/pkgtools.en.html#aptitude|aptitude]] can be used on the command-line or through a text-based interface.
+      * You do not need to have an [[other:x_conf|X server]] running to use ''aptitude'', therefore aptitude can be used in the early stages of a Linux installation, or on a remote Linux computer
+    * [[https://www.debian.org/doc/manuals/debian-faq/pkgtools.en.html#synaptic|synaptic]] is a graphical package manager
+      * You need to have an [[other:x_conf|X server]] running in order to use it
+  * All the details can be found in [[https://www.debian.org/doc/manuals/debian-faq/pkgtools.en.html|The Debian package management tools]]
 [[https://www.howtogeek.com/63997/how-to-install-programs-in-ubuntu-in-the-command-line/|apt-get tutorial]] if you are more used to Fedora/RedHat ''yum''/''dnf'' and //rpm// packages
@@ Line 1032: / Line 1069: @@
   NAME      STATE           VERSION
 * Ubuntu    Running         2</code>
-  * [[other:win10wsl#rebooting_wsl|Stop WSL+Linux]]
+  * [[other:win10wsl#rebooting_wsl|Stop all running installations]]
       * <code>> wsl --shutdown
@@ Line 1038: / Line 1075: @@
   NAME      STATE           VERSION
 * Ubuntu    Stopped         2</code>
+      * ... or stop just the specific installation that you want to save:\\ ''%%> wsl --terminate Ubuntu_custom%%''
   * Export the specified Linux installation to a //tar// file:
     * You should export to a directory or external disk where you have //enough// space\\ e.g. The tar file for a [[other:win10wsl#base_installation|newly installed and updated]] //Ubuntu 20.04.5 LTS// is ~1.4 Gb
     * You should use a detailed enough file name for the tar file\\ e.g. WSL_<Linux_Distribution>_<Distribution_Version>_<User>_<Date>.tar
-    * Example: ''%%wsl --export Ubuntu C:\Scratch\<your_login>\WSL\WSL_Ubuntu_20.04.5_LTS_stdu_22-08-29.tar%%''
+    * Example: ''%%wsl --export Ubuntu C:\Scratch\your_login\WSL\WSL_Ubuntu_20.04.5_LTS_stdu_22-08-29.tar%%''
-    * If you are not going to use the backup tar file right away, you can optionally compress it in order to save some space
+    * You can (probably) save a lot of space by compressing the backup
-      * <code>$ ls -lh /mnt/c/Scratch/<your_login>/WSL/WSL_Ubuntu_20.04.5_LTS_stdu_22-08-29.tar
+      * It is not documented (yet), but the [[https://github.com/MicrosoftDocs/WSL/issues/1607|wsl --import]] command can directly import ''tar.gz'' files!
-.4G Aug 29 17:49 /mnt/c/Scratch/<your_login>/WSL/WSL_Ubuntu_20.04.5_LTS_stdu_22-08-29.tar
+      * <code>$ ls -lh /mnt/c/Scratch/your_login/WSL/WSL_Ubuntu_20.04.5_LTS_stdu_22-08-29.tar
+.4G Aug 29 17:49 /mnt/c/Scratch/your_login/WSL/WSL_Ubuntu_20.04.5_LTS_stdu_22-08-29.tar
-$ gzip  /mnt/c/Scratch/<your_login>/WSL/WSL_Ubuntu_20.04.5_LTS_stdu_22-08-29.tar
+$ gzip  /mnt/c/Scratch/your_login/WSL/WSL_Ubuntu_20.04.5_LTS_stdu_22-08-29.tar
-$ ls -lh /mnt/c/Scratch/<your_login>/WSL/WSL_Ubuntu_20.04.5_LTS_stdu_22-08-29.tar.gz
+$ ls -lh /mnt/c/Scratch/your_login/WSL/WSL_Ubuntu_*
-M Aug 29 17:49 /mnt/c/Scratch/<your_login>/WSL/WSL_Ubuntu_20.04.5_LTS_stdu_22-08-29.tar.gz</code>
+M Aug 29 17:49 /mnt/c/Scratch/your_login/WSL/WSL_Ubuntu_20.04.5_LTS_stdu_22-08-29.tar.gz
+M Sep 14 16:18 /mnt/c/Scratch/your_login/WSL/WSL_Ubuntu_20.04.5_LTS_stdu_22-09-14.tar.gz</code>
 === Backup of specific directories ===
@@ Line 1056: / Line 1097: @@
 You can also just create backups of specific directories:
-  * Your Linux //home// directory (''/home/<your_login>/''), or some specific sub-directories of the //Ubuntu// running in WSL (sub-directories of ''/''): the best way to save them is probably to **create a //tar// file from Linux**, and put this //tar// file in a specific Windows //WSL backup folder// (we will use below the directory ''/mnt/c/Scratch/<your_login>'' or ''c:\Scratch\<your_login>'')
+  * Your Linux //home// directory (''/home/your_login/''), or some specific sub-directories of the //Ubuntu// running in WSL (sub-directories of ''/''): the best way to save them is probably to **create a //tar// file from Linux**, and put this //tar// file in a specific Windows //WSL backup folder// (we will use below the directory ''/mnt/c/Scratch/your_login'' or ''c:\Scratch\your_login'')
     * <code bash>$ cd /home
 $ du -sh $USER
-K    <your_login>
+K    your_login
-# We assume below that there is an existing /mnt/c/Scratch/<your_login>/ directory
+# We assume below that there is an existing /mnt/c/Scratch/your_login/ directory
-# It's a WINDOWS directory C:\Scratch\<your_login>
+# It's a WINDOWS directory C:\Scratch\your_login
 $ tar cfz /mnt/c/Scratch/$USER/${USER}_home_`date +%y%m%d_%H%M`.tgz $USER
 # Check the size of the new (and existing old) backup(s)
 $ ls -ltr /mnt/c/Scratch/$USER/${USER}_*.tgz
-K Jan 21  2020 /mnt/c/Scratch/<your_login>/<your_login>_home_200121.tgz
+K Jan 21  2020 /mnt/c/Scratch/your_login/your_login_home_200121.tgz
-K Aug 22  2020 /mnt/c/Scratch/<your_login>/<your_login>_home_200822_1151.tgz
+K Aug 22  2020 /mnt/c/Scratch/your_login/your_login_home_200822_1151.tgz
-K Feb 24 12:09 /mnt/c/Scratch/<your_login>/<your_login>_home_210224_1209.tgz</code>
+K Feb 24 12:09 /mnt/c/Scratch/your_login/your_login_home_210224_1209.tgz</code>
   * Regular Windows folders where you store data used by WSL: you can use ''tar'' in a Linux terminal, as above, or use any usual way of backing up Windows files (drag and drop, some specific [[other:win10apps#backup_software|backup software]])
@@ Line 1239: / Line 1280: @@
   * Determining from **inside** the running Linux if you are using WSL (or another type of virtual machine)\\ <code>$ systemd-detect-virt
-wsl</code>
+wsl
+$ env | grep -i wsl
+WSL_DISTRO_NAME=Ubuntu
+WSLENV=
+</code>
 ===== Other WSL resources and links =====
+  * Possibly useful things to sort
+    * [[https://docs.microsoft.com/en-us/windows/wsl/networking|Accessing network applications with WSL]]
+    * [[https://docs.microsoft.com/en-us/windows/wsl/faq#how-do-i-run-an-openssh-server-|How do I run an OpenSSH server?]]
   * [[https://docs.microsoft.com/en-us/windows/wsl/release-notes|Release Notes for Windows Subsystem for Linux]]