sysprop command tanslated

2026-11-14 06:45:19 +00:00 · 2018-09-20 23:40:04 +08:00
1 parent 9843449c8c
commit c268f4967f
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+sysprop
+=======
+
+Check the JVM system properties.
+
+### Usage
+
+```
+ USAGE:
+   sysprop [-h] [property-name] [property-value]
+
+ SUMMARY:
+   Display, and change all the system properties.
+
+ EXAMPLES:
+ sysprop
+ sysprop file.encoding
+ sysprop production.mode true
+
+ WIKI:
+   https://alibaba.github.io/arthas/sysprop
+
+ OPTIONS:
+ -h, --help                                  this help
+ <property-name>                             property name
+ <property-value>                            property value
+```
+
+#### Check all properties
+
+
+```
+$ sysprop
+ KEY                                                  VALUE
+-------------------------------------------------------------------------------------------------------------------------------------
+ java.runtime.name                                    Java(TM) SE Runtime Environment
+ sun.boot.library.path                                /Library/Java/JavaVirtualMachines/jdk1.8.0_51.jdk/Contents/Home/jre/lib
+ java.vm.version                                      25.51-b03
+ user.country.format                                  CN
+ gopherProxySet                                       false
+ java.vm.vendor                                       Oracle Corporation
+ java.vendor.url                                      http://java.oracle.com/
+ path.separator                                       :
+ java.vm.name                                         Java HotSpot(TM) 64-Bit Server VM
+ file.encoding.pkg                                    sun.io
+ user.country                                         US
+ sun.java.launcher                                    SUN_STANDARD
+ sun.os.patch.level                                   unknown
+ java.vm.specification.name                           Java Virtual Machine Specification
+ user.dir                                             /private/var/tmp
+ java.runtime.version                                 1.8.0_51-b16
+ java.awt.graphicsenv                                 sun.awt.CGraphicsEnvironment
+ java.endorsed.dirs                                   /Library/Java/JavaVirtualMachines/jdk1.8.0_51.jdk/Contents/Home/jre/lib/endors
+                                                      ed
+ os.arch                                              x86_64
+ java.io.tmpdir                                       /var/folders/2c/tbxwzs4s4sbcvh7frbcc7n000000gn/T/
+ line.separator
+
+ java.vm.specification.vendor                         Oracle Corporation
+ os.name                                              Mac OS X
+ sun.jnu.encoding                                     UTF-8
+ java.library.path                                    /Users/wangtao/Library/Java/Extensions:/Library/Java/Extensions:/Network/Libra
+                                                      ry/Java/Extensions:/System/Library/Java/Extensions:/usr/lib/java:.
+ sun.nio.ch.bugLevel
+ java.specification.name                              Java Platform API Specification
+ java.class.version                                   52.0
+ sun.management.compiler                              HotSpot 64-Bit Tiered Compilers
+ os.version                                           10.12.6
+ user.home                                            /Users/wangtao
+ user.timezone                                        Asia/Shanghai
+ java.awt.printerjob                                  sun.lwawt.macosx.CPrinterJob
+ file.encoding                                        UTF-8
+ java.specification.version                           1.8
+ user.name                                            wangtao
+ java.class.path                                      .
+ java.vm.specification.version                        1.8
+ sun.arch.data.model                                  64
+ java.home                                            /Library/Java/JavaVirtualMachines/jdk1.8.0_51.jdk/Contents/Home/jre
+ sun.java.command                                     Test
+ java.specification.vendor                            Oracle Corporation
+ user.language                                        en
+ awt.toolkit                                          sun.lwawt.macosx.LWCToolkit
+ java.vm.info                                         mixed mode
+ java.version                                         1.8.0_51
+ java.ext.dirs                                        /Users/wangtao/Library/Java/Extensions:/Library/Java/JavaVirtualMachines/jdk1.
+                                                      8.0_51.jdk/Contents/Home/jre/lib/ext:/Library/Java/Extensions:/Network/Library
+                                                      /Java/Extensions:/System/Library/Java/Extensions:/usr/lib/java
+ sun.boot.class.path                                  /Library/Java/JavaVirtualMachines/jdk1.8.0_51.jdk/Contents/Home/jre/lib/resour
+                                                      ces.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_51.jdk/Contents/Home/jre/li
+                                                      b/rt.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_51.jdk/Contents/Home/jre/l
+                                                      ib/sunrsasign.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_51.jdk/Contents/H
+                                                      ome/jre/lib/jsse.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_51.jdk/Content
+                                                      s/Home/jre/lib/jce.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_51.jdk/Conte
+                                                      nts/Home/jre/lib/charsets.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_51.jd
+                                                      k/Contents/Home/jre/lib/jfr.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_51.
+                                                      jdk/Contents/Home/jre/classes
+ java.vendor                                          Oracle Corporation
+ file.separator                                       /
+ java.vendor.url.bug                                  http://bugreport.sun.com/bugreport/
+ sun.cpu.endian                                       little
+ sun.io.unicode.encoding                              UnicodeBig
+ sun.cpu.isalist
+```
+
+#### Check a single property
+
+Tip: `tab` auto-completion supported
+
+```
+$ sysprop java.version
+java.version=1.8.0_51
+```
+
+#### Modify a single property
+
+```
+$ sysprop user.country
+user.country=US
+$ sysprop user.country CN
+Successfully changed the system property.
+user.country=CN
+```