Use the VI command to delete all the content in the log and monitor the log in real time.

Many times we apply ProgramYou need to view log files for troubleshooting. However, there are usually many logs generated by our previous applications. When there are too many other logs, sometimes it is a little effort to look at the logs generated by the current application. At this time, we may want to clear the previous logs to make the current logs clear:

VI test. Log

: 0, $ d
: WQ

Note: 0, $ d Indicates deleting the 0th rows to the last row; WQ indicates saving and exiting.
Run the following command to monitor the content in test. Log in Real Time:

Tail-F test. Log

Note: The tail command is to view the last 10 lines of the test. log file. The-F parameter indicates that the value is changed as the test. Log File increases.