persistentAlias.cmd

to create a persistent variable in windows cmd in the terminal/command prompt you can type

    setx variableName value

Now variableName will be available in every cmd session after exiting out of the current cmd.exe session.
It is a persistent, how amazing.

to echo it, i.e. print it out, do

  echo %variableName%

to delete a persistent variable that was previously created with setx do
To remove the variable from the user environment (which is the default place setx puts it) use:

    REG delete HKCU\Environment /F /V variableName
    
if you originally set it with setx /M as administrator use:

    REG delete "HKLM\SYSTEM\CurrentControlSet\Control\Session Manager\Environment" /F /V variableName