xv6

port of xv6 to x86-64
git clone http://frotz.net/git/xv6.git
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kill.c (232B)

      1 #include "types.h"
      2 #include "stat.h"
      3 #include "user.h"
      4 
      5 int
      6 main(int argc, char **argv)
      7 {
      8   int i;
      9 
     10   if(argc < 1){
     11     printf(2, "usage: kill pid...\n");
     12     exit();
     13   }
     14   for(i=1; i<argc; i++)
     15     kill(atoi(argv[i]));
     16   exit();
     17 }