1.jinfo

描述：输出给定 java 进程所有的配置信息。包括 java 系统属性和 jvm 命令行标记等。

用法：

jinfo [ option ] pid

jinfo [ option ] executable core

jinfo [ option ] [server-id@]remote-hostname-or-IP

例子：

jinfo pid

得到结果如下：

    JVM version is 14.0-b16  
      
    Java System Properties:  
      
    java.runtime.name = Java(TM) SE Runtime Environment  
      
    sun.boot.library.path = /work/ProgramFiles/jdk1.6.0_14/jre/lib/i386  
      
    java.vm.version = 14.0-b16  
      
    java.vm.vendor = Sun Microsystems Inc.  
      
    java.vendor.url = http://java.sun.com/  
      
    path.separator = :  
      
    java.vm.name = Java HotSpot(TM) Server VM  
      
    file.encoding.pkg = sun.io  
      
    sun.java.launcher = SUN_STANDARD  
      
    user.country = CN  
      
    sun.os.patch.level = unknown  
      
    java.vm.specification.name = Java Virtual Machine Specification  
      
    user.dir = /work/RateWorkspace/branches/rate/daemon  
      
    java.runtime.version = 1.6.0_14-b08  
      
    java.awt.graphicsenv = sun.awt.X11GraphicsEnvironment  
      
    java.endorsed.dirs = /work/ProgramFiles/jdk1.6.0_14/jre/lib/endorsed  
      
    os.arch = i386  
      
    java.io.tmpdir = /tmp  
      
    line.separator =   
      
      
      
    java.vm.specification.vendor = Sun Microsystems Inc.  
      
    os.name = Linux  
      
    sun.jnu.encoding = UTF-8  
      
    java.library.path = /work/ProgramFiles/jdk1.6.0_14/jre/lib/i386/server:/work/ProgramFiles/jdk1.6.0_14/jre/lib/i386:/work/ProgramFiles/jdk1.6.0_14/jre/../lib/i386:/usr/lib/jvm/java-6-openjdk/jre/lib/i386/client:/usr/lib/jvm/java-6-openjdk/jre/lib/i386:/usr/lib/xulrunner-addons:/usr/lib/xulrunner-addons:/usr/java/packages/lib/i386:/lib:/usr/lib  
      
    java.specification.name = Java Platform API Specification  
      
    java.class.version = 50.0  
      
    sun.management.compiler = HotSpot Tiered Compilers  
      
    os.version = 2.6.28-19-generic  
      
    user.home = /home/yblin  
      
    user.timezone = PRC  
      
    java.awt.printerjob = sun.print.PSPrinterJob  
      
    file.encoding = GBK  
      
    java.specification.version = 1.6  
      
    java.class.path =   
      
    user.name = yblin  
      
    java.vm.specification.version = 1.0  
      
    java.home = /work/ProgramFiles/jdk1.6.0_14/jre  
      
    sun.arch.data.model = 32  
      
    user.language = zh  
      
    java.specification.vendor = Sun Microsystems Inc.  
      
    java.vm.info = mixed mode  
      
    java.version = 1.6.0_14  
      
    java.ext.dirs = /work/ProgramFiles/jdk1.6.0_14/jre/lib/ext:/usr/java/packages/lib/ext  
      
    sun.boot.class.path = /work/ProgramFiles/jdk1.6.0_14/jre/lib/resources.jar:/work/ProgramFiles/jdk1.6.0_14/jre/lib/rt.jar:/work/ProgramFi