JINFO(1) JDK Commands JINFO(1)

# [NAME](#NAME)

jinfo - generate Java configuration information for a specified Java process

# [SYNOPSIS](#SYNOPSIS)

**Note:** This command is experimental and unsupported.

**jinfo** \[*option*] *pid*

[***option***](#option)

This represents the **jinfo** command-line options. See **Options for the jinfo Command**.

[***pid***](#pid)

The process ID for which the configuration information is to be printed. The process must be a Java process. To get a list of Java processes running on a machine, use either the **ps** command or, if the JVM processes are not running in a separate docker instance, the **jps** command.

# [DESCRIPTION](#DESCRIPTION)

The **jinfo** command prints Java configuration information for a specified Java process. The configuration information includes Java system properties and JVM command-line flags. If the specified process is running on a 64-bit JVM, then you might need to specify the **-J-d64** option, for example:

**jinfo -J-d64 -sysprops** *pid*

This command is unsupported and might not be available in future releases of the JDK. In Windows Systems where **dbgeng.dll** is not present, the Debugging Tools for Windows must be installed to have these tools work. The **PATH** environment variable should contain the location of the **jvm.dll** that's used by the target process or the location from which the core dump file was produced.

# [OPTIONS FOR THE JINFO COMMAND](#OPTIONS_FOR_THE_JINFO_COMMAND)

**Note:**

If none of the following options are used, both the command-line flags and the system property name-value pairs are printed.

[**-flag *name***](#flag)

Prints the name and value of the specified command-line flag.

[**-flag \[+|-\]*name***](#flag~2)

Enables or disables the specified Boolean command-line flag.

[**-flag *name*=*value***](#flag~3)

Sets the specified command-line flag to the specified value.

[**-flags**](#flags)

Prints command-line flags passed to the JVM.

[**-sysprops**](#sysprops)

Prints Java system properties as name-value pairs.

[**-h or -help**](#h)

Prints a help message.

2021 JDK 17

---

Document: jinfo(1) from openjdk-17 17.0.21.0.2-r0 (Chainguard OS)
Source: https://github.com/openjdk/jdk17u.git