xv6-riscv-rust/user/kill.c

#include "kernel/types.h"
#include "kernel/stat.h"
#include "user/user.h"

int main(int argc, char **argv) {
	int i;

	if (argc < 2) {
		fprintf(2, "usage: kill pid...\n");
		exit(1);
	}
	for (i = 1; i < argc; i++)
		kill(atoi(argv[i]));
	exit(0);
}