The automatic variables are defined as those variables that save store state information for PowerShell. These variables will include the details of a customer and the system, default and runtime variables, and PowerShell settings. These variables can be designed and handled by Windows PowerShell.

A few of the very popular Automatic Variables are mentioned below:

• $: This variable INCLUDES the last token available in the last line that is received by the session.
• $?: This variable may include the completion status of the last operation. If the last operation succeeded, its value is TRUE and FALSE if it has failed.
• $^: It may include the first token of the last line obtained by the session.
• $Args: Includes a collection of the undeclared parameters or parameter values. These are handed over to a script, script block, or function. When you construct a function, you can display the parameters by making use of the param keyword or by incorporating a comma-separated list of parameters in parentheses just after the function name.
• $Error: This variable includes an array of error objects that represent the most recent errors. The current mistake is the first error object in the array ($Error[0]).
• $ForEach: This variable includes the ENUMERATOR (not the resulting values) of a ForEach loop. You can make use of the properties and processes of enumerators on the value of the $ForEach variable. This variable lives only while the ForEach loop is OPERATING; it gets deleted post the completion of the loop.
  $Home – This variable includes the full path of the customer’s home directory. This variable is the counterpart of the %homedrive%%homepath% environment variables, commonly known as C:\Users<UserName>.
• $OFS – $OFS is a remarkable variable that saves a string (Series of characters) that you wish to utilize as an output field separator. Employ this variable when you are transforming an array into a string. By default, the value of $OFS is ” “, but you can modify the value of $OFS in your session, by just typing $OFS=”<value>”. If you are anticipating the default value of ” ” in your MODULE, script, or configuration output, be mindful that the $OFS default value has not been modified anywhere in your code.