< prev index next >

src/jdk.jcmd/share/man/jps.1

Print this page

        

@@ -1,7 +1,6 @@
-'\" t
-.\" Copyright (c) 2004, 2013, Oracle and/or its affiliates. All rights reserved.
+.\" Copyright (c) 1994, 2019, Oracle and/or its affiliates. All rights reserved.
 .\" DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 .\"
 .\" This code is free software; you can redistribute it and/or modify it
 .\" under the terms of the GNU General Public License version 2 only, as
 .\" published by the Free Software Foundation.

@@ -18,187 +17,228 @@
 .\"
 .\" Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 .\" or visit www.oracle.com if you need additional information or have any
 .\" questions.
 .\"
-.\"     Arch: generic
-.\"     Software: JDK 8
-.\"     Date: 21 November 2013
-.\"     SectDesc: Monitoring Tools
-.\"     Title: jps.1
-.\"
-.if n .pl 99999
-.TH jps 1 "21 November 2013" "JDK 8" "Monitoring Tools"
-.\" -----------------------------------------------------------------
-.\" * Define some portability stuff
-.\" -----------------------------------------------------------------
-.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-.\" http://bugs.debian.org/507673
-.\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html
-.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-.ie \n(.g .ds Aq \(aq
-.el       .ds Aq '
-.\" -----------------------------------------------------------------
-.\" * set default formatting
-.\" -----------------------------------------------------------------
-.\" disable hyphenation
-.nh
-.\" disable justification (adjust text to left margin only)
-.ad l
-.\" -----------------------------------------------------------------
-.\" * MAIN CONTENT STARTS HERE *
-.\" -----------------------------------------------------------------
-
+.\" Automatically generated by Pandoc 2.3.1
+.\"
+.TH "JPS" "1" "2018" "JDK 13" "JDK Commands"
+.hy
 .SH NAME    
-jps \- Lists the instrumented Java Virtual Machines (JVMs) on the target system\&. This command is experimental and unsupported\&.
+.PP
+jps \- list the instrumented JVMs on the target system
 .SH SYNOPSIS    
-.sp     
-.nf     
-
-\fBjps\fR [ \fIoptions\fR ] [ \fIhostid\fR ]
-.fi     
-.sp     
+.PP
+\f[B]Note:\f[R] This command is experimental\ and unsupported.
+.PP
+\f[CB]jps\f[R] [\f[CB]\-q\f[R]] [\f[CB]\-mlvV\f[R]] [\f[I]hostid\f[R]]
+.PP
+\f[CB]jps\f[R] [\f[CB]\-help\f[R]]
+.SH OPTIONS
 .TP     
-\fIoptions\fR
-Command-line options\&. See Options\&.
+.B \f[CB]\-q\f[R]
+Suppresses the output of the class name, JAR file name, and arguments
+passed to the \f[CB]main\f[R] method, producing a list of only local JVM
+identifiers.
+.RS
+.RE
+.TP
+.B \f[CB]\-mlvV\f[R]
+You can specify any combination of these options.
+.RS
+.IP \[bu] 2
+\f[CB]\-m\f[R] displays the arguments passed to the \f[CB]main\f[R] method.
+The output may be \f[CB]null\f[R] for embedded JVMs.
+.IP \[bu] 2
+\f[CB]\-l\f[R] displays the full package name for the application\[aq]s
+\f[CB]main\f[R] class or the full path name to the application\[aq]s JAR
+file.
+.IP \[bu] 2
+\f[CB]\-v\f[R] displays the arguments passed to the JVM.
+.IP \[bu] 2
+\f[CB]\-V\f[R] suppresses the output of the class name, JAR file name, and
+arguments passed to the \f[CB]main\f[R] method, producing a list of only
+local JVM identifiers.
+.RE
 .TP     
-\fIhostid\fR
-The identifier of the host for which the process report should be generated\&. The \f3hostid\fR can include optional components that indicate the communications protocol, port number, and other implementation specific data\&. See Host Identifier\&.
+.B \f[I]hostid\f[R]
+The identifier of the host for which the process report should be
+generated.
+The \f[CB]hostid\f[R] can include optional components that indicate the
+communications protocol, port number, and other implementation specific
+data.
+See \f[B]Host Identifier\f[R].
+.RS
+.RE
+.TP
+.B \f[CB]\-help\f[R]
+Displays the help message for the \f[CB]jps\f[R] command.
+.RS
+.RE
 .SH DESCRIPTION    
-The \f3jps\fR command lists the instrumented Java HotSpot VMs on the target system\&. The command is limited to reporting information on JVMs for which it has the access permissions\&.
-.PP
-If the \f3jps\fR command is run without specifying a \f3hostid\fR, then it searches for instrumented JVMs on the local host\&. If started with a \f3hostid\fR, then it searches for JVMs on the indicated host, using the specified protocol and port\&. A \f3jstatd\fR process is assumed to be running on the target host\&.
 .PP
-The \f3jps\fR command reports the local JVM identifier, or \f3lvmid\fR, for each instrumented JVM found on the target system\&. The \f3lvmid\fR is typically, but not necessarily, the operating system\&'s process identifier for the JVM process\&. With no options, \f3jps\fR lists each Java application\&'s \f3lvmid\fR followed by the short form of the application\&'s class name or jar file name\&. The short form of the class name or JAR file name omits the class\&'s package information or the JAR files path information\&.
+The \f[CB]jps\f[R] command lists the instrumented Java HotSpot VMs on the
+target system.
+The command is limited to reporting information on JVMs for which it has
+the access permissions.
+.PP
+\f[B]Note:\f[R]
+.PP
+JDK 10 added support for using the Attach API when attaching to Java
+processes running in a separate docker process.
+However, the \f[CB]jps\f[R] tool cannot see JVM processes running in a
+separate docker instance.
+If you are trying to connect a Linux host with a Virtual Machine within
+a docker container, you must use tools such as \f[CB]ps\f[R] to look up
+the PID of the JVM and then specify the PID on the command line of the
+tools that accept the PID.
+.PP
+If the \f[CB]jps\f[R] command is run without specifying a \f[CB]hostid\f[R],
+then it searches for instrumented JVMs on the local host.
+If started with a \f[CB]hostid\f[R], then it searches for JVMs on the
+indicated host, using the specified protocol and port.
+A \f[CB]jstatd\f[R] process is assumed to be running on the target host.
+.PP
+The \f[CB]jps\f[R] command reports the local JVM identifier, or
+\f[CB]lvmid\f[R], for each instrumented JVM found on the target system.
+The \f[CB]lvmid\f[R] is typically, but not necessarily, the operating
+system\[aq]s process identifier for the JVM process.
+With no options, the \f[CB]jps\f[R] command lists each Java
+application\[aq]s \f[CB]lvmid\f[R] followed by the short form of the
+application\[aq]s class name or jar file name.
+The short form of the class name or JAR file name omits the class\[aq]s
+package information or the JAR files path information.
+.PP
+The \f[CB]jps\f[R] command uses the Java launcher to find the class name
+and arguments passed to the main method.
+If the target JVM is started with a custom launcher, then the class or
+JAR file name, and the arguments to the \f[CB]main\f[R] method aren\[aq]t
+available.
+In this case, the \f[CB]jps\f[R] command outputs the string
+\f[CB]Unknown\f[R] for the class name, or JAR file name, and for the
+arguments to the \f[CB]main\f[R] method.
+.PP
+The list of JVMs produced by the \f[CB]jps\f[R] command can be limited by
+the permissions granted to the principal running the command.
+The command lists only the JVMs for which the principal has access
+rights as determined by operating system\-specific access control
+mechanisms.
+.SH HOST IDENTIFIER
+.PP
+The host identifier, or \f[CB]hostid\f[R], is a string that indicates the
+target system.
+The syntax of the \f[CB]hostid\f[R] string corresponds to the syntax of a
+URI:
+.RS
 .PP
-The \f3jps\fR command uses the Java launcher to find the class name and arguments passed to the main method\&. If the target JVM is started with a custom launcher, then the class or JAR file name and the arguments to the \f3main\fR method are not available\&. In this case, the \f3jps\fR command outputs the string \f3Unknown\fR for the class name or JAR file name and for the arguments to the \f3main\fR method\&.
-.PP
-The list of JVMs produced by the \f3jps\fR command can be limited by the permissions granted to the principal running the command\&. The command only lists the JVMs for which the principle has access rights as determined by operating system-specific access control mechanisms\&.
-.SH OPTIONS    
-The \f3jps\fR command supports a number of options that modify the output of the command\&. These options are subject to change or removal in the future\&.
+[\f[I]protocol\f[R]\f[CB]:\f[R]][[\f[CB]//\f[R]]\f[I]hostname\f[R]][\f[CB]:\f[R]\f[I]port\f[R]][\f[CB]/\f[R]\f[I]servername\f[R]]
+.RE
 .TP
--q
-.br
-Suppresses the output of the class name, JAR file name, and arguments passed to the \f3main\fR method, producing only a list of local JVM identifiers\&.
-.TP
--m
-.br
-Displays the arguments passed to the \f3main\fR method\&. The output may be \f3null\fR for embedded JVMs\&.
-.TP
--l
-.br
-Displays the full package name for the application\&'s \f3main\fR class or the full path name to the application\&'s JAR file\&.
-.TP
--v
-.br
-Displays the arguments passed to the JVM\&.
-.TP
--V
-.br
-Suppresses the output of the class name, JAR file name, and arguments passed to the main method, producing only a list of local JVM identifiers\&.
-.TP
--J\f3option\fR
-.br
-Passes \f3option\fR to the JVM, where option is one of the \f3options\fR described on the reference page for the Java application launcher\&. For example, \f3-J-Xms48m\fR sets the startup memory to 48 MB\&. See java(1)\&.
-.SH HOST\ IDENTIFIER    
-The host identifier, or \f3hostid\fR is a string that indicates the target system\&. The syntax of the \f3hostid\fR string corresponds to the syntax of a URI:
-.sp     
-.nf     
-\f3[protocol:][[//]hostname][:port][/servername]\fP
-.fi     
-.nf     
-\f3\fP
-.fi     
-.sp     
+.B \f[I]protocol\f[R]
+The communications protocol.
+If the \f[I]protocol\f[R] is omitted and a \f[I]hostname\f[R] isn\[aq]t
+specified, then the default protocol is a platform\-specific, optimized,
+local protocol.
+If the protocol is omitted and a host name is specified, then the
+default protocol is \f[CB]rmi\f[R].
+.RS
+.RE
 .TP     
-\fIprotocol\fR
-The communications protocol\&. If the \f3protocol\fR is omitted and a \f3hostname\fR is not specified, then the default protocol is a platform-specific, optimized, local protocol\&. If the protocol is omitted and a host name is specified, then the default protocol is \f3rmi\fR\&.
+.B \f[I]hostname\f[R]
+A host name or IP address that indicates the target host.
+If you omit the \f[I]hostname\f[R] parameter, then the target host is the
+local host.
+.RS
+.RE
 .TP     
-hostname
-A hostname or IP address that indicates the target host\&. If you omit the \f3hostname\fR parameter, then the target host is the local host\&.
+.B \f[I]port\f[R]
+The default port for communicating with the remote server.
+If the \f[I]hostname\f[R] parameter is omitted or the \f[I]protocol\f[R]
+parameter specifies an optimized, local protocol, then the \f[I]port\f[R]
+parameter is ignored.
+Otherwise, treatment of the \f[I]port\f[R] parameter is
+implementation\-specific.
+For the default \f[CB]rmi\f[R] protocol, the \f[I]port\f[R] parameter
+indicates the port number for the \f[CB]rmiregistry\f[R] on the remote
+host.
+If the \f[I]port\f[R] parameter is omitted, and the \f[I]protocol\f[R]
+parameter indicates \f[CB]rmi\f[R], then the default \f[CB]rmiregistry\f[R]
+port (\f[CB]1099\f[R]) is used.
+.RS
+.RE
 .TP     
-port
-The default port for communicating with the remote server\&. If the \f3hostname\fR parameter is omitted or the \f3protocol\fR parameter specifies an optimized, local protocol, then the \f3port\fR parameter is ignored\&. Otherwise, treatment of the \f3port\fR parameter is implementation specific\&. For the default \f3rmi\fR protocol, the \f3port\fR parameter indicates the port number for the rmiregistry on the remote host\&. If the \f3port\fR parameter is omitted, and the \f3protocol\fR parameter indicates \f3rmi\fR, then the default rmiregistry port (1099) is used\&.
-.TP     
-servername
-The treatment of this parameter depends on the implementation\&. For the optimized, local protocol, this field is ignored\&. For the \f3rmi\fR protocol, this parameter is a string that represents the name of the RMI remote object on the remote host\&. See the \f3jstatd\fR command \f3-n\fRoption for more information\&.
-.SH OUTPUT\ FORMAT    
-The output of the \f3jps\fR command follows the following pattern:
-.sp     
-.nf     
-\f3lvmid [ [ classname | JARfilename | "Unknown"] [ arg* ] [ jvmarg* ] ]\fP
-.fi     
-.nf     
-\f3\fP
-.fi     
-.sp     
-All output tokens are separated by white space\&. An \f3arg\fR value that includes embedded white space introduces ambiguity when attempting to map arguments to their actual positional parameters\&.
+.B \f[I]servername\f[R]
+The treatment of this parameter depends on the implementation.
+For the optimized, local protocol, this field is ignored.
+For the \f[CB]rmi\f[R] protocol, this parameter is a string that
+represents the name of the RMI remote object on the remote host.
+See the \f[B]jstatd\f[R] command \f[CB]\-n\f[R] option.
+.RS
+.RE
+.SH OUTPUT FORMAT OF THE JPS COMMAND
+.PP
+The output of the \f[CB]jps\f[R] command has the following pattern:
+.RS
+.PP
+\f[I]lvmid\f[R] [ [ \f[I]classname\f[R] | \f[I]JARfilename\f[R] |
+\f[CB]"Unknown"\f[R]] [ \f[I]arg\f[R]* ] [ \f[I]jvmarg\f[R]* ] ]
+.RE
 .PP
-\fINote:\fR It is recommended that you do not write scripts to parse \f3jps\fR output because the format might change in future releases\&. If you write scripts that parse \f3jps\fR output, then expect to modify them for future releases of this tool\&.
+All output tokens are separated by white space.
+An \f[CB]arg\f[R] value that includes embedded white space introduces
+ambiguity when attempting to map arguments to their actual positional
+parameters.
+.PP
+\f[B]Note:\f[R]
+.PP
+It\[aq]s recommended that you don\[aq]t write scripts to parse
+\f[CB]jps\f[R] output because the format might change in future releases.
+If you write scripts that parse \f[CB]jps\f[R] output, then expect to
+modify them for future releases of this tool.
 .SH EXAMPLES    
-This section provides examples of the \f3jps\fR command\&.
+.PP
+This section provides examples of the \f[CB]jps\f[R] command.
 .PP
 List the instrumented JVMs on the local host:
-.sp     
-.nf     
-\f3jps\fP
-.fi     
-.nf     
-\f318027 Java2Demo\&.JAR\fP
-.fi     
-.nf     
-\f318032 jps\fP
-.fi     
-.nf     
-\f318005 jstat\fP
-.fi     
-.nf     
-\f3\fP
-.fi     
-.sp     
-The following example lists the instrumented JVMs on a remote host\&. This example assumes that the \f3jstat\fR server and either the its internal RMI registry or a separate external rmiregistry process are running on the remote host on the default port (port 1099)\&. It also assumes that the local host has appropriate permissions to access the remote host\&. This example also includes the \f3-l\fR option to output the long form of the class names or JAR file names\&.
-.sp     
-.nf     
-\f3jps \-l remote\&.domain\fP
-.fi     
-.nf     
-\f33002 /opt/jdk1\&.7\&.0/demo/jfc/Java2D/Java2Demo\&.JAR\fP
-.fi     
-.nf     
-\f32857 sun\&.tools\&.jstatd\&.jstatd\fP
-.fi     
-.nf     
-\f3\fP
-.fi     
-.sp     
-The following example lists the instrumented JVMs on a remote host with a non-default port for the RMI registry\&. This example assumes that the \f3jstatd\fR server, with an internal RMI registry bound to port 2002, is running on the remote host\&. This example also uses the \f3-m\fR option to include the arguments passed to the \f3main\fR method of each of the listed Java applications\&.
-.sp     
-.nf     
-\f3jps \-m remote\&.domain:2002\fP
-.fi     
-.nf     
-\f33002 /opt/jdk1\&.7\&.0/demo/jfc/Java2D/Java2Demo\&.JAR\fP
-.fi     
-.nf     
-\f33102 sun\&.tools\&.jstatd\&.jstatd \-p 2002\fP
-.fi     
+.IP
 .nf     
-\f3\fP
+\f[CB]
+jps
+18027\ Java2Demo.JAR
+18032\ jps
+18005\ jstat
+\f[R]
+.fi
+.PP
+The following example lists the instrumented JVMs on a remote host.
+This example assumes that the \f[CB]jstat\f[R] server and either the its
+internal RMI registry or a separate external \f[CB]rmiregistry\f[R]
+process are running on the remote host on the default port (port
+\f[CB]1099\f[R]).
+It also assumes that the local host has appropriate permissions to
+access the remote host.
+This example includes the \f[CB]\-l\f[R] option to output the long form of
+the class names or JAR file names.
+.IP
+.nf
+\f[CB]
+jps\ \-l\ remote.domain
+3002\ /opt/jdk1.7.0/demo/jfc/Java2D/Java2Demo.JAR
+2857\ sun.tools.jstatd.jstatd
+\f[R]
+.fi
+.PP
+The following example lists the instrumented JVMs on a remote host with
+a nondefault port for the RMI registry.
+This example assumes that the \f[CB]jstatd\f[R] server, with an internal
+RMI registry bound to port \f[CB]2002\f[R], is running on the remote host.
+This example also uses the \f[CB]\-m\f[R] option to include the arguments
+passed to the \f[CB]main\f[R] method of each of the listed Java
+applications.
+.IP
+.nf
+\f[CB]
+jps\ \-m\ remote.domain:2002
+3002\ /opt/jdk1.7.0/demo/jfc/Java2D/Java2Demo.JAR
+3102\ sun.tools.jstatd.jstatd\ \-p\ 2002
+\f[R]
 .fi     
-.sp     
-.SH SEE\ ALSO    
-.TP 0.2i    
-\(bu
-java(1)
-.TP 0.2i    
-\(bu
-jstat(1)
-.TP 0.2i    
-\(bu
-jstatd(1)
-.TP 0.2i    
-\(bu
-rmiregistry(1)
-.RE
-.br
-'pl 8.5i
-'bp
< prev index next >