After receiving the message...

I ftped the tz*95 data from elsie.nci.nih.gov. However, all the little utilities #include the file 'private.h', which in turn #includes a file called 'unistd.h', which unfortunately is not available on my system.

...I followed up asking for details and learned that...

What I'm using is a win311/dos system. My c compiler is microsoft's c/c++ ver. 7.

If anyone knows where F_OK and R_OK (manifest constants needed when calling "access") can be found when using the above compiler, I'd appreciate hearing from you by electronic mail. Note that it isn't any of... #include "sys/types.h" /* for time_t */ #include "stdio.h" #include "ctype.h" #include "errno.h" #include "string.h" #include "limits.h" /* for CHAR_BIT */ #include "time.h" #include "stdlib.h" #include "unistd.h" /* for F_OK and R_OK */ --ado