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| .TH "JINFO" "1" "2021" "JDK 17" "JDK Commands" |
| .hy |
| .SH NAME |
| .PP |
| jinfo \- generate Java configuration information for a specified Java |
| process |
| .SH SYNOPSIS |
| .PP |
| \f[B]Note:\f[R] This command is experimental and unsupported. |
| .PP |
| \f[CB]jinfo\f[R] [\f[I]option\f[R]] \f[I]pid\f[R] |
| .TP |
| .B \f[I]option\f[R] |
| This represents the \f[CB]jinfo\f[R] command\-line options. |
| See \f[B]Options for the jinfo Command\f[R]. |
| .RS |
| .RE |
| .TP |
| .B \f[I]pid\f[R] |
| 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 |
| \f[CB]ps\f[R] command or, if the JVM processes are not running in a |
| separate docker instance, the \f[B]jps\f[R] command. |
| .RS |
| .RE |
| .SH DESCRIPTION |
| .PP |
| The \f[CB]jinfo\f[R] 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 \f[CB]\-J\-d64\f[R] option, for example: |
| .RS |
| .PP |
| \f[CB]jinfo\ \-J\-d64\ \-sysprops\f[R] \f[I]pid\f[R] |
| .RE |
| .PP |
| This command is unsupported and might not be available in future |
| releases of the JDK. |
| In Windows Systems where \f[CB]dbgeng.dll\f[R] is not present, the |
| Debugging Tools for Windows must be installed to have these tools work. |
| The \f[CB]PATH\f[R] environment variable should contain the location of |
| the \f[CB]jvm.dll\f[R] that\[aq]s used by the target process or the |
| location from which the core dump file was produced. |
| .SH OPTIONS FOR THE JINFO COMMAND |
| .PP |
| \f[B]Note:\f[R] |
| .PP |
| If none of the following options are used, both the command\-line flags |
| and the system property name\-value pairs are printed. |
| .TP |
| .B \f[CB]\-flag\f[R] \f[I]name\f[R] |
| Prints the name and value of the specified command\-line flag. |
| .RS |
| .RE |
| .TP |
| .B \f[CB]\-flag\f[R] [\f[CB]+\f[R]|\f[CB]\-\f[R]]\f[I]name\f[R] |
| Enables or disables the specified Boolean command\-line flag. |
| .RS |
| .RE |
| .TP |
| .B \f[CB]\-flag\f[R] \f[I]name\f[R]\f[CB]=\f[R]\f[I]value\f[R] |
| Sets the specified command\-line flag to the specified value. |
| .RS |
| .RE |
| .TP |
| .B \f[CB]\-flags\f[R] |
| Prints command\-line flags passed to the JVM. |
| .RS |
| .RE |
| .TP |
| .B \f[CB]\-sysprops\f[R] |
| Prints Java system properties as name\-value pairs. |
| .RS |
| .RE |
| .TP |
| .B \f[CB]\-h\f[R] or \f[CB]\-help\f[R] |
| Prints a help message. |
| .RS |
| .RE |
