1JINFO(1) JDK Commands JINFO(1)
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6 jinfo - generate Java configuration information for a specified Java
7 process
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10 Note: This command is experimental and unsupported.
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12 jinfo [option] pid
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14 option This represents the jinfo command-line options. See Options for
15 the jinfo Command.
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17 pid The process ID for which the configuration information is to be
18 printed. The process must be a Java process. To get a list of
19 Java processes running on a machine, use either the ps command
20 or, if the JVM processes are not running in a separate docker
21 instance, the jps command.
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23 Note: JDK 10 has added support for using the Attach API when at‐
24 taching to Java processes running in a separate docker process.
25 However, the jps command will not list the JVM processes that
26 are running in a separate docker instance. If you are trying to
27 connect a Linux host with a Virtual Machine that is in a docker
28 container, you must use tools such as ps to look up the PID of
29 the JVM.
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32 The jinfo command prints Java configuration information for a specified
33 Java process. The configuration information includes Java system prop‐
34 erties and JVM command-line flags. If the specified process is running
35 on a 64-bit JVM, then you might need to specify the -J-d64 option, for
36 example:
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38 jinfo -J-d64 -sysprops pid
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40 This command is unsupported and might not be available in future re‐
41 leases of the JDK. In Windows Systems where dbgeng.dll is not present,
42 the Debugging Tools for Windows must be installed to have these tools
43 work. The PATH environment variable should contain the location of the
44 jvm.dll that's used by the target process or the location from which
45 the core dump file was produced.
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48 Note:
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50 If none of the following options are used, both the command-line flags
51 and the system property name-value pairs are printed.
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53 -flag name
54 Prints the name and value of the specified command-line flag.
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56 -flag [+|-]name
57 Enables or disables the specified Boolean command-line flag.
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59 -flag name=value
60 Sets the specified command-line flag to the specified value.
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62 -flags Prints command-line flags passed to the JVM.
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64 -sysprops
65 Prints Java system properties as name-value pairs.
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67 -h or -help
68 Prints a help message.
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72JDK 14 2020 JINFO(1)