Integer_Type system (String_Type cmd)
The system function may be used to execute the string
expression cmd in an inferior shell. This function is an
interface to the C system function which returns an
implementation-defined result. On Linux, it returns 127 if the
inferior shell could not be invoked, -1 if there was some other
error, otherwise it returns the return code for cmd.
define dir ()
{
() = system ("DIR");
}
displays a directory listing of the current directory under MSDOS or
VMS.
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