μ§μ§, ν μΌμμ΄ λ§λ  νλ‘κ·Έλ¨. 보면 μκ² μ§λ§.. λ§λ  μ΄μ λ μκΎΈ λμ€μ°½μμ ls λΌκ³  νμ΄ν νκ² λμ λ§μ΄μ§.. νν
~cpp 
#include <stdlib.h>
void myStrCat(char * dest, const char * source) {
	while(*dest++)
		;
	*--dest = ' ';
	dest++;
	while(*source)
		*dest++ = *source++;
}
int main(int argc, char * argv[]) {
	char argRedirectToDir[255] = "dir";
	int i;
	for (i = 1; i < argc; i++)
		myStrCat(argRedirectToDir, argv[i]);
	exit(system(argRedirectToDir));
}













