Is there ANY way to chdir from within a program?

[Robert Barrell]

In Article 200 at rdb1.UUCP I asked:
>     Does unix or xenix have the equivalent of the BDOS calls which are present
> in CP/M or MFDOS?  I am using DataFlex, which semi-supports such calls, but I
> have only found references to such calls in DOS or CP/M information.  If there
> ARE such calls for *nix, in what reference might I find them?  Please e-mail
> any responses, and I'll post a summary if enough interest is shown.  Thanks.

     I left out the reasons WHY I am interested in this information.  In the
DataFlex language, there is no chdir command, and I wish to be able to change
directories from within a DataFlex program.  At the moment, all I can do is
exit the program, change directories, then re-run the program.  If there is any
other way to perform this function, that information would be helpful as well.
There are other things for which a BDOS type of operation would be handy, but
chdir would be the primary one.
     I have already received a number of responses which have mentioned section
(2) of the manuals.  My thanks to those who have supplied this information.  I
will look into it.  Unfortunately, there is no such section to the manuals of
SCO xenix, but I should be able to find out something from the SYSV 3.2 manuals
for a Unisys 5000/85 system to which I have access.

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