Learn more about how to check file times in Linux

Learn more about how to view file time in Linux

In Linux systems, file time information includes three types: access time (atime ), modification time (mtime) and change time (ctime). This time information can help users track file changes and access history, which is very useful for system management and debugging. In this article, we'll take a deep dive into how to use command line tools to view a file's time information, along with corresponding code examples.

1. Check the access time of the file (atime)

To check the access time of the file, you can use the stat command. This command can display detailed information about the file, including timestamp. Here is an example:

stat filename

After executing the above command, you will see the access time information of the file.

2. Check the modification time of the file (mtime)

To check the modification time of the file, you can also use the stat command. Here is an example:

stat -c %y filename

The above command will display the modification time information of the file. You can also use the ls command to view the modification time of the file, as shown below:

ls -l filename

3. View the change time (ctime) of the file

If you want to view the file To change the change time, you can use the following command:

stat -c %z filename

This command will display the change time information of the file. In addition, you can also use the ls command to view the change time of the file, as follows:

ls -lc filename

4. Sample code

The following is a simple Bash script example, you can View the access time, modification time and change time of the file at one time:

#!/bin/bash

filename="example.txt"

echo "Access Time:"
stat -c %x $filename
echo "Modify Time:"
stat -c %y $filename
echo "Change Time:"
stat -c %z $filename

In the script, use the stat command to obtain the time information of the file, and then output the access time, modification time and Change time. You can save the above code as a check_file_time.sh file and execute the script through the bash check_file_time.sh command.

Through the introduction of this article, I believe you now understand the basic method of viewing file time in a Linux system and master how to use command line tools to achieve it. This time information is of great significance for file management and system maintenance. I hope this article will be helpful to you.

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