SYSTEMQQ

Portability Function: Executes a system command by passing a command string to the operating system's command interpreter.

Module

USE IFPORT

構文

result = SYSTEMQQ (commandline)

commandline

(Input) Character*(*). Command to be passed to the operating system.

Results

The result type is LOGICAL(4). The result is .TRUE. if successful; otherwise, .FALSE..

The SYSTEMQQ function lets you pass operating-system commands as well as programs. SYSTEMQQ refers to the COMSPEC and PATH environment variables that locate the command interpreter file (usually named COMMAND.COM).

On Windows* systems, the calling process waits until the command terminates. To insure compatibility and consistent behavior, an image can be invoked directly by using the Windows API CreateProcess( ) in your Fortran code.

If the function fails, call GETLASTERRORQQ to determine the reason. One of the following errors can be returned:

The command line character limit for the SYSTEMQQ function is the same limit that your operating system command interpreter accepts.

Compatibility

CONSOLE STANDARD GRAPHICS QUICKWIN GRAPHICS WINDOWS DLL LIB

 USE IFPORT
 LOGICAL(4) result
 result = SYSTEMQQ('copy c:\bin\fmath.dat &
                         c:\dat\fmath2.dat')

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