How to enable debug logs on Linux?

The specific steps to enable debug logging in a Linux system may vary depending on the distribution, but generally, you can open debug logs by following these steps:

1. Find the corresponding configuration file: Usually, every application has a configuration file that controls logging behavior. You can try to find the configuration file related to the application in the /etc directory, usually named after the application’s name.
2. Edit the configuration file by opening it with a text editor and locating the settings related to logging. There are usually one or more configuration items to control the log level, such as DEBUG, INFO, WARNING, ERROR, etc. Setting the log level to DEBUG indicates recording all detailed debugging information.
3. Save and close the configuration file: After editing the configuration file, remember to save and close it.
4. Restart the application: Some applications need to be restarted in order for changes made to the configuration file to take effect. You can restart the application using the following command:

sudo systemctl restart <应用程序名称>

is the name of the application that needs to be restarted.

1. To view the debug logs: After modifying the configuration file, the application will start recording debug-level log information. You can use the following command to view the log file:

tail -f /var/log/<应用程序名称>.log

In this case, is the name of the application, and .log is the file extension for the log file. This command will display the latest content of the log file in real-time, and you can exit the view by pressing Ctrl + C.

Please note that the above steps are a common method for enabling debug logging, but the specific steps may vary depending on the distribution and application. If you are unable to locate the configuration file or are unsure how to enable debug logging, please refer to the official documentation or community support of the relevant application.