jinfo

Introduction

The jinfo tool can be used to view the extended parameters of a running Java application, including Java system attributes and JVM command line parameters. In addition, jinfo can be used to dynamically modify some parameters of a running JVM.

Installation Mode

Use OpenJDK to install this tool. For BiSheng JDK, it is a built-in tool.

Usage

• If a Java environment is configured, you can directly run the jinfo command.
• If no Java environment is not configured, run the ps -ef | grep java command to find the Java process. Then, switch to the JDK bin directory and run the ./jinfo command.

  Syntax:

  1	jinfo –flags $pid

  Common parameters are as follows:

  Parameter	Description
  -flags	Displays all parameters, including Java System attributes and JVM command line parameters.
  -sysprops	Displays the command line.
  -flag name=value	Sets the corresponding parameter.