파일에 수정 시간 가져오기

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

//
// get file modify time
//
char* getModifyTime(char *path)
{
    FILE *fp;
    unsigned int chk=0, i=0;
    char tmp[200],cmd[100],c;
    char *out;

    sprintf(cmd, "stat %s | grep Modify: > /tmp/msgLogFile", path);
    system(cmd);

    fp = fopen("/tmp/msgLogFile", "r");
    if(!fp) exit(1);

    while((c=getc(fp))!=EOF)
    {
        if(i>7)
            tmp[chk++] = c;
        else    
            i++;
    }
    tmp[chk-1]='\0';

    out = (char*)malloc(strlen(tmp));
    strcpy(out, tmp);

    return out;
}

int main(void)
{
    char *time;
    time = getModifyTime("./messages");    
    printf("%s \n", time);

    free(time);

    return 1;
}