Re: [dev] sbase TODO patch

[Rob]

On Thu, Feb 09, 2012 at 12:15:32PM +0000, stateless wrote:
> Hi all,
>
> Implemented yes(1), sync(1) and printenv(1).  Source is attached,
> haven't had time to write the manpage yet.
>
> Cheers,
> stateless

These are slightly shorter and printenv() returns 1 when it can't find
the environment variable.

Thanks,
Rob

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include "util.h"

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

	if(argc < 2){
		print_me = "y";
	}else{
		char *arg, *p;
		int i, len = 1;

		for(i = 1; i < argc; i++)
			len += 1 + strlen(argv[i]);

		p = arg = malloc(len);
		if(!arg)
			eprintf("malloc():");

		for(i = 1; i < argc; i++)
			p += sprintf(p, "%s%s", argv[i], argv[i + 1] ? " " : "");

		print_me = arg;
	}

	for(;;)
		printf("%s\n", print_me);
}

#include <stdio.h>
#include <stdlib.h>

int main(int argc, char **argv, char **environ)
{
	int ret = 0;

	if(argc <= 1){
		char **ep;
		for(ep = environ; *ep; ep++)
			printf("%s\n", *ep);

	}else{
		int i;

		for(i = 1; i < argc; i++){
			char *env = getenv(argv[i]);

			if(env)
				printf("%s\n", env);
			else
				ret = 1;
		}
	}

	return ret;
}