[cyberbanjo]

At least one subtle difference, is a bare scope block like TFA has, will print out everything in it instead of the output you would expect, where as Bash behaves more like Invoke-Command -ScriptBlock {}.

Compare:

  PS /home/me> {
  >>     $Env:MYSQL_HOST = "MyHost.com";
  >>     $Env:MYSQL_USER = "MyUser";
  >>     java -jar myprogram.jar;
  >> }

    $Env:MYSQL_HOST = "MyHost.com";
    $Env:MYSQL_USER = "MyUser";
    java -jar myprogram.jar;


  PS /home/me> Invoke-Command -ScriptBlock {
  >>     $Env:MYSQL_HOST = "MyHost.com";
  >>     $Env:MYSQL_USER = "MyUser";
  >>     java -jar myprogram.jar;
  >> }
  Error: Unable to access jarfile myprogram.jar