As for the "declining demand" languages of any shell scripting tool, Ruby, Kotlin, C, R, Rust, Lua, or Dart, it's clear that you should list them on your resume if you know them, but don't spend ...

SEE: Top 5 programming languages for systems admins to learn (TechRepublic) HTML5 Yes, HTML5 is on this list despite it not necessarily fitting the mold of a mobile app development language like ...