Merge pull request #121792 from KuSh/patch-1

Update functions-install-core-tools.md

Author: Jak-MS

includes/functions-install-core-tools.md

@@ -51,19 +51,20 @@ The following steps use [APT](https://wiki.debian.org/Apt) to install Core Tools
     ##### Ubuntu
 
     ```bash
-    sudo sh -c 'echo "deb [arch=amd64] https://packages.microsoft.com/repos/microsoft-ubuntu-$(lsb_release -cs)-prod $(lsb_release -cs) main" > /etc/apt/sources.list.d/dotnetdev.list'
+    sudo sh -c 'echo "deb [arch=amd64] https://packages.microsoft.com/repos/microsoft-ubuntu-$(lsb_release -cs 2>/dev/null)-prod $(lsb_release -cs 2>/dev/null) main" > /etc/apt/sources.list.d/dotnetdev.list'
     ```
 
     ##### Debian
 
     ```bash
-    sudo sh -c 'echo "deb [arch=amd64] https://packages.microsoft.com/debian/$(lsb_release -rs | cut -d'.' -f 1)/prod $(lsb_release -cs) main" > /etc/apt/sources.list.d/dotnetdev.list'
+    sudo sh -c 'echo "deb [arch=amd64] https://packages.microsoft.com/debian/$(lsb_release -rs 2>/dev/null | cut -d'.' -f 1)/prod $(lsb_release -cs 2>/dev/null) main" > /etc/apt/sources.list.d/dotnetdev.list'
     ```
 
 1. Check the `/etc/apt/sources.list.d/dotnetdev.list` file for one of the appropriate Linux version strings in the following table:
 
     | Linux distribution         | Version    |
     | -------------------------- | ---------- |
+    | Debian 12                  | `bookworm` |
     | Debian 11                  | `bullseye` |
     | Debian 10                  | `buster`   |
     | Debian 9                   | `stretch`  |