/sys$common/syshlp/HELPLIB.HLB  —  CRTL  fcntl
    Performs controlling operations on an open file.

    Format

      #include  <sys/types.h>

      #include  <unistd.h>

      #include  <fcntl.h>

      int fcntl  (int file_desc, int request [, int arg]);

      int fcntl  (int file_desc, int request [, struct flock *arg]);
Additional Information: explode extract
Arguments Description Return Values
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