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观察运行中的java程序的运行环境参数：参数包括Java System属性，各种.properties文件配置参数和JVM命令行参数
# jinfo $(pgrep java)Attaching to process ID 15888, please wait...Debugger attached successfully.Server compiler detected.JVM version is 24.72-b04Java System Properties:java.vendor = Oracle Corporationsun.java.launcher = SUN_STANDARDcatalina.base = /srv/apache-tomcatsun.management.compiler = HotSpot 64-Bit Tiered Compilerscatalina.useNaming = truecaptcha.times = 5os.name = Linux......java.vm.name = Java HotSpot(TM) 64-Bit Server VMcpool.maxIdleTime = 7200file.encoding = UTF-8java.specification.version = 1.7VM Flags:-Djava.util.logging.config.file=/srv/apache-tomcat/conf/logging.properties -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager -Xms512m -Xmx8192m -XX:PermSize=64M -XX:MaxPermSize=512m -Djava.endorsed.dirs=/srv/apache-tomcat/endorsed -Dcatalina.base=/srv/apache-tomcat -Dcatalina.home=/srv/apache-tomcat -Djava.io.tmpdir=/srv/apache-tomcat/temp
实例二
# jinfo $(jps | grep Bootstrap | cut -d " " -f1)Attaching to process ID 15888, please wait...Debugger attached successfully.Server compiler detected.JVM version is 24.72-b04Java System Properties:java.vendor = Oracle Corporationsun.java.launcher = SUN_STANDARDcatalina.base = /srv/apache-tomcatsun.management.compiler = HotSpot 64-Bit Tiered Compilerscatalina.useNaming = truecaptcha.times = 5os.name = Linux
原文出处：Netkiller 系列 手札
本文作者：陈景峯 转载请与作者联系，同时请务必标明文章原始出处和作者信息及本声明。