module:tldr:facf2

The "module avail" command is used in a Linux environment to list all the available software modules that can be loaded or unloaded using the 'module' command. When you run the "module avail" command, a list of available modules will be displayed, indicating the names, versions, and descriptions of each module.

In a Linux system, modules are sets of environment variables and executables that can be dynamically loaded or unloaded to modify the default behavior of the system. These modules are typically used in research computing or high-performance computing environments where users may require different software packages or versions for their work.

The "module avail" command allows users to see all the available modules that have been configured on the system. This can help users determine which modules they can load or unload to access or change the environment variables, libraries, or binaries associated with the modules.

By viewing the available modules, users can select and load specific modules using the "module load" command, thus customizing their environment to meet their specific software and functionality requirements.