FM-----SXPG_CALL_SYSTEM

Question

what this fm do.
and what is "commandname"--is he running batch file???

Answer 1

check the documentation of the FM in SE37...
FU SXPG_CALL_SYSTEM
Text
     Execute an External Command
Functionality
     SXPG_CALL_SYSTEM: Execute External Command (Express Method)
     Using this function module, you can:
     o   Check a user's authorization to execute a command
     o   Execute the command
     To determine the system on which the command should be executed, the
     function module uses by default the current host system and the current
     operating system type of the user.
     As the function module is RFC-capable, you can use the RFC interface
     (Remote Function Call Interface) to run the function module in a
     different SAP application server. The external command is then
     accordingly executed in the host system of the other SAP server.
     SXPG_CALL_SYSTEM uses the following rules to determine which variant of
     a command is used for the execution:
     o   If a command with the same operating system type as the one in the
         sytem field SY-OPSYS exists, this definition is used for the
         execution of the command.
     o   If the first check fails, the syntax group for SY-OPSYS is        determined. A syntax group is an SAP construct that groups operating
       systems that use the same syntax for commands and filenames. If a
       command whose operating system type matches the determined syntax
       group, this definition of the command is used.
   o   If no matching definition is found for the syntax group, the
       function module searches for a definition with the operating system
       type ANYOS (executable in all supported operating systems). This
       definition is then used, if found.
   o   Otherwise, the exception COMMAND_NOT_FOUND is triggered.
se
Syntax:
   CALL FUNCTION SXPG_CALL_SYSTEM
        IMPORTING
           COMMANDNAME   = <SAP command name>   DEFAULT '*'
           ADDITIONAL_PARAMETERS    = <Argument string> default <space>
        EXPORTING
           STATUS        = <Exit status of command>
         TABLES
           EXEC_PROTOCOL = <Log>   In structure BTCXPM.  Can
   contain STDOUT, STDERR
         EXCEPTIONS
           NO_PERMISSION  Command rejected by User exit auth.
                          check
           COMMAND_NOT_FOUND   Command not defined in SAP database
           PARAMETERS_TOO_LONG   Complete parameter string exceeds
   128 characters
           SECURITY_RISK  Security check failed
           WRONG_CHECK_CALL_INTERFACE  Problem with function
                                        module for additional security
   check
           PROGRAM_START_ERROR  Error while starting program