文章目录
- 二、命令列表
- 2.1 jvm相关命令
- 2.1.4 sysprop（查看和修改JVM的系统属性）
- 举例1：sysprop 查看所有系统属性
- 举例2：sysprop java.version 查看单个属性，支持通过tab补全
二、命令列表
2.1 jvm相关命令
2.1.4 sysprop（查看和修改JVM的系统属性）
参数说明：
| 命令 | 说明 |
|---|---|
| sysprop | 查看所有系统属性 |
| sysprop java.version | 查看单个属性，支持通过tab补全 |
| sysprop user.country US | 修改单个属性 |
举例1：sysprop 查看所有系统属性
基础语法：
sysprop
[arthas@18139]$ syspropKEY VALUE
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------awt.toolkit sun.awt.X11.XToolkit file.encoding.pkg sun.io java.specification.version 1.8 log4j.configurationFile /home/ems/ems_eam/conf/log4j2.xml sun.cpu.isalist sun.jnu.encoding UTF-8 java.class.path .:/home/ems/ems_eam/../:/home/ems/ems_eam/lib/spring-webmvc-4.2.3.RELEASE.jarjava.vm.vendor Oracle Corporation sun.arch.data.model 64 sun.font.fontmanager sun.awt.X11FontManager java.vendor.url http://java.oracle.com/ user.timezone Asia/Shanghai os.name Linux java.vm.specification.version 1.8 user.country CN sun.java.launcher SUN_STANDARD sun.boot.library.path /home/ems/3rdparty/java/jre/lib/amd64 sun.java.command com.hero.lte.ems.eam.server.container.Bootstrap sun.cpu.endian little user.home /root user.language zh java.specification.vendor Oracle Corporation java.home /home/ems/3rdparty/java/jre file.separator / line.separator java.vm.specification.vendor Oracle Corporation java.specification.name Java Platform API Specification java.awt.graphicsenv sun.awt.X11GraphicsEnvironment java.awt.headless true sun.boot.class.path /home/ems/3rdparty/java/jre/lib/resources.jar:/home/ems/3rdparty/java/jre/lib/rt.jar:/home/ems/3rdparty/java/jre/lib/sunrsasign.jar:/home/ems/3rdparty/java/jre/lib/jsse.jar:/home/ems/3 rdparty/java/jre/lib/jce.jar:/home/ems/3rdparty/java/jre/lib/charsets.jar:/home/ems/3rdparty/java/jre/lib/jfr.jar:/home/ems/3rdparty/java/jre/classes sun.management.compiler HotSpot 64-Bit Tiered Compilers java.runtime.version 1.8.0_121-b13 user.name root path.separator : os.version 3.10.0-1160.el7.x86_64 java.endorsed.dirs /home/ems/3rdparty/java/jre/lib/endorsed java.runtime.name Java(TM) SE Runtime Environment file.encoding UTF-8 eam.momgr /home/ems/ems_eam/../momgr/ sun.nio.ch.bugLevel java.vm.name Java HotSpot(TM) 64-Bit Server VM java.vendor.url.bug http://bugreport.sun.com/bugreport/ java.io.tmpdir /tmp java.version 1.8.0_121 user.dir /home/ems/ems_eam os.arch amd64 java.vm.specification.name Java Virtual Machine Specification java.awt.printerjob sun.print.PSPrinterJob eam.conf /home/ems/ems_eam/conf sun.os.patch.level unknown java.library.path /home/ems/ems_eam/lib java.vm.info mixed mode java.vendor Oracle Corporation java.vm.version 25.121-b13 java.ext.dirs /home/ems/3rdparty/java/jre/lib/ext:/usr/java/packages/lib/ext sun.io.unicode.encoding UnicodeLittle eam.chart /home/ems/ems_eam/../chart java.class.version 52.0
[arthas@18139]$
举例2：sysprop java.version 查看单个属性，支持通过tab补全
基础语法：
sysprop java.version
[arthas@18139]$ sysprop java.versionKEY VALUE
--------------------------------------------------------------------------------------------------------------------------------java.version 1.8.0_121
[arthas@18139]$
