Ubuntu releases are also given code names, using an adjective and an animal with the same first letter – an alliteration, e.g., "Dapper Drake". The support period for non-LTS releases is 9 months. Through the ESM paid option, support can be extended even longer, up to a total of ten years for 18.04. LTS releases 12.04 and newer are freely supported for five years. The desktop version of LTS releases for 10.04 and earlier were supported for three years, with server version support for five years. Įvery fourth release, occurring in the second quarter of even-numbered years, has been designated as a long-term support (LTS) release. Ĭanonical schedules Ubuntu releases to occur approximately one month after GNOME releases, resulting in each Ubuntu release including a newer version of GNOME. Consequently, version numbers for future versions are provisional if the release is delayed until a different month (or even year) to that planned, the version number will change accordingly. The first Ubuntu release, for example, was Ubuntu 4.10 and was released on 20 October 2004. However, I expect that the /proc/cmdline is likely always going to differ between WSL1 and WSL2 and can be programmatically parsed to determine the current version.Ubuntu releases are made semiannually by Canonical Ltd, the developers of the Ubuntu operating system, using the year and month of the release as a version number. This currently works (and has for the last year, at least), but could change in the future if either the WSL1 or WSL2 architecture changes in some way. grep -q "^initrd" /proc/cmdline returns success on WSL2 but error on WSL1.grep -q "^BOOT_IMAGE" /proc/cmdline returns success on WSL1 but error on WSL2./proc/cmdline on WSL2 is initrd=\initrd.img panic=-1 pty.legacy_count=0 nr_cpus=16./proc/cmdline on WSL1 is BOOT_IMAGE=/kernel init=/init. If Interop isn't enabled, then a fallback method is to check /proc/cmdline: This will work as long as Interop is enabled for WSL. Thanks to this Super User answer for the concept. Matches the current instance (via $WSL_DISTRO_NAME) lineįinds the version number in the line and outputs it You don't normally see the problem unless you try to grep it (or pipe it to something like hexdump -C), but you have to clean it up before you can grep it. Runs it through iconv to fix its malformed UTF16 output. Sed 's/.*\(]\)]*/\1/'Įxecutes wsl.exe -l -v to return the full list of all distributions you might have installed Windows 10 Version 2004 (build 19041.153 & later) enhances WSL2 further see and. WSL 2 was redesigned with a Linux kernel running in a lightweight VM environment, and innovators have found many more things they can do with WSL 2. WSL 1 was based on Microsoft's Linux-compatible kernel interface, a compatibility translation layer with no Linux kernel code. If the kernel version >= 4.19, it's WSL Version 2. From the WSL shell prompt, run uname or uname -r. If you don't see a version number, or if you see an error message (Thank you, Cornea Valentin) you have version 1 (you may also see a version number '1' which could indicate that you're running v1 - see here). If version 2 is installed properly, you will see the version number. Open Windows PowerShell or cmd and enter the command wsl -l -v. This illustrates the result when the OS is Build 16299:Ī. If you do not see Windows version 18917 or higher, you have version 1. Is the next-to-last numeric group version 18917 or higher? If so, it is possible you have WSL 2 but not yet verified.
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