man pages section 2: System Calls
    
D
 
 deliver process signals to specific LWPs
  -- _lwp_sigredirect ( Index Term Link )
  -- _signotifywait ( Index Term Link )
 
 determine accessibility of a file - access ( Index Term Link )
 
 devices, I/O control functions - ioctl ( Index Term Link )
 
 directories
  change working directory -- chdir ( Index Term Link )
  create a new one - mknod ( Index Term Link )
  get configurable pathname variables -- pathconf ( Index Term Link )
  make a new one - mkdir ( Index Term Link )
  read directory entries and put in a file system independent format - getdents ( Index Term Link )
  remove - rmdir ( Index Term Link )
 
 dup - duplicate an open file descriptor ( Index Term Link )