Help: mysh mls command summary:

The mls (module list) command is used to provide version information for the loaded ruby modules. The usage template for this command is:

mysh>mls <mask>

Where:

<mask> is an optional, case-sensitive pattern for filtering out the modules
       displayed. If omitted, all modules are displayed.

Examples:

mysh>mls DidYouMean 1.0.0 Gem 2.5.2 InArray 0.1.8 MiniReadline 0.8.0 Mysh 0.5.4 VersionLS 0.4.1

mysh>mls M DidYouMean 1.0.0 MiniReadline 0.8.0 Mysh 0.5.4