Makefile)、备份与恢复等场景中扮演着重要角色。本文将详细解析这些时间戳的含义、触发条件及实际应用。 时间戳的基本概念 Access Time (atime) 含义:Access Time 表示文件或目录**上次被访问(读取)**的时间。 触发条件:任何一次读取文件内容的操作(如cat、less)都会更新 atime。 示例: 使用cat filename查看文件内...
-rw-r--r--1greys root92008-04-0507:31/tmp/file1 To show you how this works, I'll change the ownership of the file and then run the same 3lscommands to show you that only thectimehad been updated. I run the date command just before doing anything else so that you can compare th...
To show you how this works, I'll change the ownership of the file and then run the same 3 ls commands to show you that only thectimehad been updated. I run the date command just before doing anything else so that you can compare the times: ubuntu# date Sat Apr 5 07:35:16 IST 2...
Timestamps are shown when using the long-format output of ls command, ls -l: ubuntu#ls -l /tmp/file1-rw-r--r--1greys root92008-04-0507:10/tmp/file1 This is the default output of ls -l, which shows you the time of the last file modification – mtime. In our example, file /...
When you access the file through any command, process, and script the system will update the access time of the file or document. In general, access timestamp refers to the last time when the system or the user used a program or command to display the content inside the files. You can...
find$PATH -mtime0 查找距当前时间24小时以内修改的文件 Search for files in your home directory which have been modified in the last twenty-four hours. This command works this way because the time since each 服务 系统知识 搭建 原创 opskumu ...
Changing atime and mtime to the current Unix time It's probably useful to know that the default behavior of thetouch commandis to update both access time and modification time of a file, changing them to the current time on your system. ...
This command works this way because the time since each le was last modi ed is divided by 24 hours and any remainder is discarded. That means that to match -mtime 0, a le will have to have a modi cation in the past which is less than 24 hours ago. 将根目录下 24 小时内更改过内容...
To set a new access timestamp, you would use the -a (access time) option. This command sets the access timestamp to the computer's current time: stat dp.c The access timestamp changed, as expected. However, the changed timestamp was updated as well; this is normal. ...
If I add-fto the backup command, the file will indeed be backed up. Do you have an idea how to solve the issue? Ideally, usectime. Maybe use both, or provide an option, butctimeis really what should be used. It would probably have to revert tomtimeon a filesystem that doesn't ha...