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   ## <a id='return-codes'></a> Retrieve cf CLI Return Codes
   
  -The cf CLI uses exit codes, which help with scripting and confirming that a command has run successfully. 
  -
  -After you run a cf CLI command, you can retrieve its return code by running `echo $?` on Mac or `echo %ERRORLEVEL%` on Windows. If the return code is `0`, the command was successful.
  +The cf CLI uses exit codes, which help with scripting and confirming that a command has run successfully. If a command was successful, the exit code is `0`.
  +
  +To view a cf CLI exit code:
  +
  +1. Log in to the cf CLI:
  +
  +    ```
  +    cf login
  +    ```
  +
  +1. Run one of the following commands to see that the login was successful, depending on your OS: 
  +    * **Mac**: `echo $?`
  +    * **Windows**: `echo %ERRORLEVEL%`
  +
  +    If the command was successful, the exit code is `0`.
   
   ## <a id='help'></a> View CLI Help Output
   
   The `cf help`  command lists the cf CLI commands and a brief description of each. For more information, see [help](http://cli.cloudfoundry.org/en-US/cf/help.html) in the _Cloud Foundry CLI Reference Guide_.
   
  -Passing the `-h` flag to any command lists detailed help, including any aliases. 
  +To list detailed help on any cf CLI command, add the `-h` flag to the command. 
   
   The following example shows detailed help output for `cf delete`:
   
  
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  ### <a id='listing-users'></a> List Users
  
  This section describes how to list users in an org or space. For more information, see See [org-users](http://cli.cloudfoundry.org/en-US/cf/org-users.html) and [space-users](http://cli.cloudfoundry.org/en-US/cf/space-users.html) in the _Cloud Foundry CLI Reference Guide_
  
  To list users in an org or a space:
  
  
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  ## <a id='login'></a> Log In With the API
  
  You can write a script to log in and set your target using the non-interactive `cf api` , `cf auth`, and `cf target` commands.
  
  For more information, see the following topics in the _Cloud Foundry CLI Reference Guide_:
  
  * [api](http://cli.cloudfoundry.org/en-US/cf/api.html)
  * [auth](http://cli.cloudfoundry.org/en-US/cf/auth.html)
  