rzloop.c

   1 /* loop on a command until the return code is non-zero */
   2 #include <stdio.h>
   3 #include <unistd.h>
   4 #include <stdlib.h>
   5 #include <string.h>
   6
   7 int
   8 main( int argc, char **argv )
   9 {
  10         int ok, i,p;
  11         char c[80];
  12         if (argc < 2) { printf("Supply a command line to run\n"); exit(0); }
  13         *c = 0;
  14         for (i = 1; i < argc; i++) {
  15                 p = strlen(c);
  16                 if (p + strlen(argv[i]) > sizeof(c))
  17                         break;
  18                 snprintf( &c[p], sizeof(c), "%s ", argv[i] );
  19         }
  20         printf( "Command line: %s", c);
  21         i = 0;
  22         ok = 0;
  23         while( 0 == ok ) {
  24                 ok = system( c );
  25                 printf( "\n\n# %d, %d = %s\n", i++, ok, c );
  26                 sleep(4);
  27         }
  28         return ok;
  29 }