localtime && time zone 修改 linux系统时间

通过修改 localtime 修改时区

一段C语言代码>> su 进入 root 权限，>> gcc -o main test.c>> ./main

#include <stdlib.h>#include <string.h>#include <stdio.h>int main(){  //system("cd /etc;rm localtime;ln -s /usr/share/zoneinfo/US/Hawaii localtime;date");  char *tz_path = (char *)malloc(sizeof(char) * 100);  char *tz      = (char *)malloc(sizeof(char) * 30);  strcpy(tz_path, "cd /etc;rm localtime;ln -s /usr/share/zoneinfo/");  strcpy(tz,"Africa");  strcat(tz,"/");  strcat(tz,"Accra");  strcat(tz_path, tz);  strcat(tz_path, " localtime");  system(tz_path);  system("date");  free(tz_path);  free(tz);  return 0;}

时区划分

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localtime 与 time zone的区别

。。。

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参考文献

http://www.thegeekstuff.com/2010/09/change-timezone-in-linux/