Syntax

   @System([LOG_PREFIX,<log_prefix>,][ENCODED,][RETURN_PID_IF_ASYNC]<command>)
   
Arguments
   
   LOG_PREFIX

   If this optional argument is specified, then the next argument is
   the prefix that will be prepended to the logging which is
   triggered by the presence of this argument. One informational log
   per log_prefix will be issued and any errors will be logged.

   <log_prefix>

   The character string that is prepended to any logging done by
   this function. Typically this is the transformer name.

   ENCODED

   If this optional argument is specified, then <command> argument is
   expected to be FMEParsableText encoded

   RETURN_PID_IF_ASYNC (Windows-Only)

   If this optional argument is specified then instead of returning 0 on 
   success, function will return the process ID of the process that was spawned.

   NOTE: This is Windows only option mainly added for use in WorkspaceRunner.
         Also name is misleading it should be just RETURN_PID, because that's
         what it is doing. [FMEENGINE-59973]

   <command>   
   
   The command which is to be executed by FME. The command may be any command 
   capable of being run from the host operating system's command line. 
   
   Range: String  

Description

   This function enables the FME to execute any command from within an FME 
   mapping file. The command to run is specified in <command>. The return value 
   from the <command> is returned by the function and can be assigned to an 
   attribute. 

   The FME translation is normally blocked while the command executes. If the 
   command ends with an "&" character, it is executed in the background. In this 
   case, the return value will be 0 if the command launches successfully, or 
   non-zero otherwise.

   The C runtime library system function is used to execute the command line 
   passed into @System.