preserve-dates

1. 查看修整過的檔案與原始檔案存取/修改時間，已經不同。

   [dywang@dyH gcc]$ stat stripex1 stripex1_stripped 
     File: `stripex1'
     Size: 8195      	Blocks: 24         IO Block: 4096   regular file
   Device: fd03h/64771d	Inode: 18142       Links: 1
   Access: (0775/-rwxrwxr-x)  Uid: (  500/  dywang)   Gid: (  500/  dywang)
   Access: 2013-09-01 09:19:35.495806134 +0800
   Modify: 2013-09-01 09:18:57.410054071 +0800
   Change: 2013-09-01 09:18:57.410054071 +0800
     File: `stripex1_stripped'
     Size: 4368      	Blocks: 16         IO Block: 4096   regular file
   Device: fd03h/64771d	Inode: 18144       Links: 1
   Access: (0775/-rwxrwxr-x)  Uid: (  500/  dywang)   Gid: (  500/  dywang)
   Access: 2013-09-01 09:19:35.495806134 +0800
   Modify: 2013-09-01 09:19:35.495806134 +0800
   Change: 2013-09-01 09:19:35.495806134 +0800
   

2. 修整時維持原始檔的存取/修改時間

   [dywang@dyH gcc]$ strip -p -ostripex1_strippedp stripex1
   

3. 再查看修整過的檔案 stripex1_strippedp 與原始檔案 stripex1 存取/修改時間，i完全一樣。

   [dywang@dyH gcc]$ stat stripex1 stripex1_stripped 
     File: `stripex1'
   [dywang@dyH gcc]$ stat stripex1 stripex1_stripped stripex1_strippedp
     File: `stripex1'
     Size: 8195      	Blocks: 24         IO Block: 4096   regular file
   Device: fd03h/64771d	Inode: 18142       Links: 1
   Access: (0775/-rwxrwxr-x)  Uid: (  500/  dywang)   Gid: (  500/  dywang)
   Access: 2013-09-01 09:19:35.495806134 +0800
   Modify: 2013-09-01 09:18:57.410054071 +0800
   Change: 2013-09-01 09:18:57.410054071 +0800
     File: `stripex1_stripped'
     Size: 4368      	Blocks: 16         IO Block: 4096   regular file
   Device: fd03h/64771d	Inode: 18144       Links: 1
   Access: (0775/-rwxrwxr-x)  Uid: (  500/  dywang)   Gid: (  500/  dywang)
   Access: 2013-09-01 09:19:35.495806134 +0800
   Modify: 2013-09-01 09:19:35.495806134 +0800
   Change: 2013-09-01 09:19:35.495806134 +0800
     File: `stripex1_strippedp'
     Size: 4368      	Blocks: 16         IO Block: 4096   regular file
   Device: fd03h/64771d	Inode: 18141       Links: 1
   Access: (0775/-rwxrwxr-x)  Uid: (  500/  dywang)   Gid: (  500/  dywang)
   Access: 2013-09-01 09:19:35.000000000 +0800
   Modify: 2013-09-01 09:18:57.000000000 +0800
   Change: 2013-09-01 09:34:19.322931661 +0800