linux之chdir函数解析

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[lingyun@localhost chdir]$ ls
chdir.c

[lingyun@localhost chdir]$ cat chdir.c

/*********************************************************************************

* Copyright: (C) 2013 fulinux<fulinux@sina.com>

* All rights reserved.

*

* Filename: chdir.c

* Description: This file

*

* Version: 1.0.0(08/06/2013~)

* Author: fulinux <fulinux@sina.com>

* ChangeLog: 1, Release initial version on "08/06/2013 03:35:13 PM"

*

********************************************************************************/

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

#include <unistd.h>

#include <fcntl.h>

int main(void)

{

if(chdir("/tmp") < 0)

{

perror("chdir");

exit(1);

}

printf("chdir to /tmp successded\n");

exit(0);

}

[lingyun@localhost chdir]$ gcc chdir.c

[lingyun@localhost chdir]$ pwd

/home/lingyun/apue/chdir

[lingyun@localhost chdir]$ ./a.out

chdir to /tmp successded

[lingyun@localhost chdir]$ pwd

/home/lingyun/apue/chdir