Linux系統將時間標記分三類：

atime( A ccess time)：檔案上次被讀取的時間。

ctime(status C hange time)：檔案的屬性或內容上次被修改的時間。

mtime( M odified time)：檔案的內容上次被修改的時間。

下面我將用實驗給大家講解一下：

[[email protected] ~]# touch a.txt  ==》建立檔案a.txt

[[email protected] ~]# stat a.txt    ==》檢視時間戳

  File: "a.txt"

  Size: 0         Blocks: 0          IO Block: 4096   普通空檔案

Device: fd00h/64768dInode: 674903      Links: 1

Access: (0644/-rw-r--r--)  Uid: (    0/    root)   Gid: (    0/    root)

Access: 2018-03-10 13:29:04.130157512 +0800

Modify: 2018-03-10 13:29:04.130157512 +0800

Change: 2018-03-10 13:29:04.130157512 +0800

[[email protected] ~]# echo 1>> a.txt  ==》向檔案a.txt追加內容

[[email protected]

  File: "a.txt"

  Size: 1         Blocks: 8          IO Block: 4096   普通檔案

Device: fd00h/64768dInode: 674903      Links: 1

Access: (0644/-rw-r--r--)  Uid: (    0/    root)   Gid: (    0/    root)

Access: 2018-03-10 13:29:04.130157512 +0800

Modify: 2018-03-10 13:29:19.351159892 +0800==》時間戳改變

Change: 2018-03-10 13:29:19.351159892 +0800 ==》時間戳改變

[[email protected] ~]# chmod +x a.txt  ==》修改檔案a.txt的許可權

[[email protected] ~]# stat a.txt  ==》檢視修改許可權後的檔案時間戳

  File: "a.txt"

  Size: 1         Blocks: 8          IO Block: 4096   普通檔案

Device: fd00h/64768dInode: 674903      Links: 1

Access: (0755/-rwxr-xr-x)  Uid: (    0/    root)   Gid: (    0/    root)

Access: 2018-03-10 13:29:04.130157512 +0800

Modify: 2018-03-10 13:29:19.351159892 +0800

Change: 2018-03-10 13:29:42.156153774 +0800==》時間戳改變

[[email protected] ~]# cat a.txt  ==》檢視檔案a.txt

[[email protected] ~]# stat a.txt  ==》檢視檔案a.txt的時間戳

  File: "a.txt"

  Size: 1         Blocks: 8          IO Block: 4096   普通檔案

Device: fd00h/64768dInode: 674903      Links: 1

Access: (0755/-rwxr-xr-x)  Uid: (    0/    root)   Gid: (    0/    root)

Access: 2018-03-10 13:30:00.010155999 +0800 ==》時間戳改變

Modify: 2018-03-10 13:29:19.351159892 +0800

Change: 2018-03-10 13:29:42.156153774 +0800

[[email protected] ~]# vim a.txt  ==》向檔案a.txt新增內容

daskhdjkas

"a.txt" 1L, 11C 已寫入

[[email protected] ~]# stat a.txt   ==>檢視檔案a.txt的時間戳

  File: "a.txt"

  Size: 11        Blocks: 8          IO Block: 4096   普通檔案

Device: fd00h/64768dInode: 674908      Links: 1

Access: (0755/-rwxr-xr-x)  Uid: (    0/    root)   Gid: (    0/    root)

Access: 2018-03-10 13:30:34.652158960 +0800 ==》時間戳改變

Modify: 2018-03-10 13:30:34.652158960 +0800==》時間戳改變

Change: 2018-03-10 13:30:34.653158940 +0800==》時間戳改變