boehm-gc/if_not_there.c

   1 /* Conditionally execute a command based if the file argv[1] doesn't exist */
   2 /* Except for execvp, we stick to ANSI C.                                  */
   3 # include "gcconfig.h"
   4 # include <stdio.h>
   5
   6 int main(argc, argv, envp)
   7 int argc;
   8 char ** argv;
   9 char ** envp;
  10 {
  11     FILE * f;
  12     if (argc < 3) goto Usage;
  13     if ((f = fopen(argv[1], "rb")) != 0
  14         || (f = fopen(argv[1], "r")) != 0) {
  15         fclose(f);
  16         return(0);
  17     }
  18     printf("^^^^Starting command^^^^\n");
  19     execvp(argv[2], argv+2);
  20     exit(1);
  21
  22 Usage:
  23     fprintf(stderr, "Usage: %s file_name command\n", argv[0]);
  24     return(1);
  25 }
  26