4.3BSD - /usr/ingres/source/gutil/cat.c

   1: # include   <fcntl.h>
   2: # include   <sccs.h>
   3: # include   <useful.h>
   4: 
   5: SCCSID(@(#)cat.c	8.3	2/8/85)
   6: 
   7: /*
   8: **  CAT -- "cat" a file
   9: **
  10: **	This function is essentially identical to the UNIX cat(I).
  11: **
  12: **	Parameters:
  13: **		file -- the name of the file to be cat'ed
  14: **
  15: **	Returns:
  16: **		zero -- success
  17: **		else -- failure (could not open file)
  18: **
  19: **	Side Effects:
  20: **		"file" is open and read once through; a copy is made
  21: **			to the standard output.
  22: */
  23: 
  24: cat(file)
  25: char    *file;
  26: {
  27:     char        buf[BLOCK_SZ];
  28:     register int    i;
  29:     register int    fd;
  30: 
  31:     fd = open(file, O_RDONLY);
  32:     if (fd < 0)
  33:         return (1);
  34: 
  35:     while ((i = read(fd, buf, BLOCK_SZ)) > 0)
  36:     {
  37:         write(1, buf, i);
  38:     }
  39: 
  40:     return (0);
  41: }

Defined functions