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C/C++ Source or Header  |  1987-06-30  |  363 b   |  23 lines
  1. #include <stdio.h>
  2.  
  3. main(argc,argv)
  4. int argc;
  5. char *argv[];
  6. {
  7.     int fd;
  8.     char cbuffer[512];
  9.  
  10.     if(argc != 2) {
  11.         fprintf(stderr,"usage: readbyte file\n");
  12.         exit(1);
  13.     }
  14.     if((fd=open(argv[1],0)) < 0) {
  15.         fprintf(stderr,"cant open %s\n",argv[1]);
  16.         exit(1);
  17.     }
  18.     if(read(fd,cbuffer,1) != 1) {
  19.         fprintf(stderr,"cant read byte from file %s\n",argv[1]);
  20.         exit(1);
  21.     }
  22. }
  23.