'\" t
.\"     Title: trace-cmd-listen
.\"    Author: [see the "AUTHOR" section]
.\" Generator: DocBook XSL Stylesheets vsnapshot <http://docbook.sf.net/>
.\"      Date: 02/10/2024
.\"    Manual: libtracefs Manual
.\"    Source: libtracefs
.\"  Language: English
.\"
.TH "TRACE\-CMD\-LISTEN" "1" "02/10/2024" "libtracefs" "libtracefs Manual"
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.SH "NAME"
trace-cmd-listen \- listen for incoming connection to record tracing\&.
.SH "SYNOPSIS"
.sp
\fBtrace\-cmd listen\fR \-p \fIport\fR [\fIOPTIONS\fR]
.SH "DESCRIPTION"
.sp
The trace\-cmd(1) listen sets up a port to listen to waiting for connections from other hosts that run \fItrace\-cmd\-record(1)\fR with the \fB\-N\fR option\&. When a connection is made, and the remote host sends data, it will create a file called \fItrace\&.HOST:PORT\&.dat\fR\&. Where HOST is the name of the remote host, and PORT is the port that the remote host used to connect with\&.
.SH "OPTIONS"
.PP
\fB\-p\fR \fIport\fR
.RS 4
This option will specify the port to listen to\&.
.RE
.PP
\fB\-D\fR
.RS 4
This options causes trace\-cmd listen to go into a daemon mode and run in the background\&.
.RE
.PP
\fB\-V\fR
.RS 4
Listen on a vsocket instead\&. This is useful for tracing between host and guest VMs\&.
.RE
.PP
\fB\-d\fR \fIdir\fR
.RS 4
This option specifies a directory to write the data files into\&.
.RE
.PP
\fB\-o\fR \fIfilename\fR
.RS 4
This option overrides the default
\fItrace\fR
in the
\fItrace\&.HOST:PORT\&.dat\fR
that is created when a remote host connects\&.
.RE
.PP
\fB\-l\fR \fIfilename\fR
.RS 4
This option writes the output messages to a log file instead of standard output\&.
.RE
.PP
\fB\-\-verbose\fR[=\fIlevel\fR]
.RS 4
Set the log level\&. Supported log levels are "none", "critical", "error", "warning", "info", "debug", "all" or their identifiers "0", "1", "2", "3", "4", "5", "6"\&. Setting the log level to specific value enables all logs from that and all previous levels\&. The level will default to "info" if one is not specified\&.
.sp
.if n \{\
.RS 4
.\}
.nf
Example: enable all critical, error and warning logs
.fi
.if n \{\
.RE
.\}
.sp
.if n \{\
.RS 4
.\}
.nf
trace\-cmd listen \-\-verbose=warning
.fi
.if n \{\
.RE
.\}
.RE
.SH "SEE ALSO"
.sp
trace\-cmd(1), trace\-cmd\-record(1), trace\-cmd\-report(1), trace\-cmd\-start(1), trace\-cmd\-stop(1), trace\-cmd\-extract(1), trace\-cmd\-reset(1), trace\-cmd\-split(1), trace\-cmd\-list(1)
.SH "AUTHOR"
.sp
Written by Steven Rostedt, <\m[blue]\fBrostedt@goodmis\&.org\fR\m[]\&\s-2\u[1]\d\s+2>
.SH "RESOURCES"
.sp
\m[blue]\fBhttps://git\&.kernel\&.org/pub/scm/utils/trace\-cmd/trace\-cmd\&.git/\fR\m[]
.SH "COPYING"
.sp
Copyright (C) 2010 Red Hat, Inc\&. Free use of this software is granted under the terms of the GNU Public License (GPL)\&.
.SH "NOTES"
.IP " 1." 4
rostedt@goodmis.org
.RS 4
\%mailto:rostedt@goodmis.org
.RE