[lingyun@localhost getcwd]$ cat getcwd.c
/*********************************************************************************
* Copyright: (C) 2013 fulinux<fulinux@sina.com>
* All rights reserved.
*
* Filename: getcwd.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 03:56:30 PM"
*
********************************************************************************/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
int main(void)
{
char *ptr;
int size = 50;
if(chdir("/usr/tmp/yum-lingyun-sYjnfB") < 0)
{
perror("chdir");
exit(1);
}
ptr = malloc(size);
if(getcwd(ptr, size) == NULL)
{
perror("getcwd");
exit(1);
}
printf("cwd = %s
", ptr);
exit(0);
}
[lingyun@localhost getcwd]$ ll /usr/
total 224
dr-xr-xr-x. 2 root root 69632 Apr 29 03:32 bin
drwxr-xr-x. 2 root root 4096 Sep 23 2011 etc
drwxr-xr-x. 2 root root 4096 Sep 23 2011 games
drwxr-xr-x. 39 root root 4096 Apr 15 15:44 include
dr-xr-xr-x. 29 root root 4096 Apr 22 03:18 lib
dr-xr-xr-x. 132 root root 86016 Apr 29 03:32 lib64
drwxr-xr-x. 30 root root 12288 Apr 29 03:32 libexec
drwxr-xr-x. 15 root root 4096 Jun 5 19:57 local
drwxr-xr-x 3 root root 4096 Apr 21 20:38 man
dr-xr-xr-x. 2 root root 12288 Jul 30 03:42 sbin
drwxr-xr-x. 265 root root 12288 Jun 9 09:34 share
drwxr-xr-x. 4 root root 4096 Jul 6 2012 src
lrwxrwxrwx. 1 root root 10 Jul 6 2012 tmp -> ../var/tmp
[lingyun@localhost getcwd]$ ls /usr/tmp/yum-lingyun-sYjnfB/
[lingyun@localhost getcwd]$ gcc getcwd.c
[lingyun@localhost getcwd]$ ./a.out
cwd = /var/tmp/yum-lingyun-sYjnfB
[lingyun@localhost getcwd]$