SYSTEM — Execute a shell command

Description

Passes the command COMMAND to a shell (see system(3)). If argument STATUS is present, it contains the value returned by system(3), which is presumably 0 if the shell command succeeded. Note that which shell is used to invoke the command is system-dependent and environment-dependent.

This intrinsic is provided in both subroutine and function forms; however, only one form can be used in any given program unit.

Note that the system function need not be thread-safe. It is the responsibility of the user to ensure that system is not called concurrently.

Syntax

CALL SYSTEM(COMMAND [, STATUS])
STATUS = SYSTEM(COMMAND)

Arguments

COMMAND Shall be of default CHARACTER type.
STATUS (Optional) Shall be of default INTEGER type.

Standard

GNU extension

Class

Subroutine, function

See also

EXECUTE_COMMAND_LINE, which is part of the Fortran 2008 standard and should considered in new code for future portability.