Add ACfL system package steps for Amazon Linux 2023

Author: garyjcarroll

content/install-guides/acfl.md

@@ -142,33 +142,62 @@ install takes place **after** ACfL, you will no longer be able to fully
 uninstall ACfL.
 {{% /notice %}}
 
-## Download and install using System Packages - Ubuntu Linux
+## Download and install using System Packages
+
+### Ubuntu Linux 20.04 and 22.04
 
 Arm Compiler for Linux is available to install with the Ubuntu system package manager `apt` command.
 
-### Setup the ACfL package repository:
+#### Set up the ACfL package repository
 
 Add the ACfL `apt` package repository to your Ubuntu 20.04 or 22.04 system:
 
 ```bash { target="ubuntu:latest" }
 sudo apt update
-sudo apt install -y curl
-source /etc/os-release
+sudo apt install -y curl environment-modules python3 libc6-dev
+. /etc/os-release
 curl "https://developer.arm.com/packages/ACfL%3A${NAME}-${VERSION_ID/%.*/}/${VERSION_CODENAME}/Release.key" | sudo tee /etc/apt/trusted.gpg.d/developer-arm-com.asc
 echo "deb https://developer.arm.com/packages/ACfL%3A${NAME}-${VERSION_ID/%.*/}/${VERSION_CODENAME}/ ./" | sudo tee /etc/apt/sources.list.d/developer-arm-com.list
 sudo apt update
 ```
 
 The ACfL Ubuntu package repository is now ready to use.
 
-### Install ACfL
+#### Install ACfL
 
 Download and install Arm Compiler for Linux with:
 
 ```bash { target="ubuntu:latest" }
 sudo apt install acfl
 ```
 
+### Amazon Linux 2023
+
+Arm Compiler for Linux is available to install with either the `dnf` or `yum` system package manager.
+
+#### Install ACfL from the Amazon Linux 2023 package repository
+
+Install ACfL and prerequisites from the Amazon Linux 2023 `rpm` package repository with `dnf`:
+
+```bash
+sudo dnf update
+sudo dnf install 'dnf-command(config-manager)' procps psmisc make environment-modules
+sudo dnf config-manager --add-repo https://developer.arm.com/packages/ACfL%3AAmazonLinux-2023/latest/ACfL%3AAmazonLinux-2023.repo
+sudo dnf install acfl
+```
+
+Or using the equivalent `yum` commands:
+
+```bash
+sudo yum update
+sudo yum install 'dnf-command(config-manager)' procps psmisc make environment-modules
+sudo yum config-manager --add-repo https://developer.arm.com/packages/ACfL%3AAmazonLinux-2023/latest/ACfL%3AAmazonLinux-2023.repo
+sudo yum install acfl
+```
+
+The ACfL tools are now ready to use.
+
+
 ### Set up environment
 
 Arm Compiler for Linux uses environment modules to dynamically modify your user environment. Refer to the [Environment Modules documentation](https://lmod.readthedocs.io/en/latest/#id) for more information.
@@ -178,17 +207,17 @@ Set up the environment, for example, in your `.bashrc` and add module files.
 #### Ubuntu Linux:
 
 ```bash { target="ubuntu:latest" }
-echo "source /usr/share/modules/init/bash" >> ~/.bashrc
+echo ". /usr/share/modules/init/bash" >> ~/.bashrc
 echo "module use /opt/arm/modulefiles" >> ~/.bashrc
-source ~/.bashrc
+. ~/.bashrc
 ```
 
-#### Red Hat Linux:
+#### Red Hat or Amazon Linux:
 
 ```bash { target="fedora:latest" }
-echo "source /usr/share/Modules/init/bash" >> ~/.bashrc
+echo ". /usr/share/Modules/init/bash" >> ~/.bashrc
 echo "module use /opt/arm/modulefiles" >> ~/.bashrc
-source ~/.bashrc
+. ~/.bashrc
 ```
 
 To list available modules:
@@ -217,7 +246,7 @@ Arm Compiler for Linux is available with the [Spack](https://spack.io/) package
 
 See the [Arm Compiler for Linux and Arm PL now available in Spack](https://community.arm.com/arm-community-blogs/b/high-performance-computing-blog/posts/arm-compiler-for-linux-and-arm-pl-now-available-in-spack) blog for full details.
 
-### Setup Spack
+### Set up Spack
 
 Clone the Spack repository and add `bin` directory to the path:
 
@@ -248,7 +277,7 @@ If you wish to install just the Arm Performance Libraries, use:
 spack install armpl-gcc
 ```
 
-### Setup environment
+### Set up environment
 Use the commands below to set up the environment:
 
 ```console