'\" t
.\"     Title: perf-help
.\"    Author: [FIXME: author] [see http://docbook.sf.net/el/author]
.\" Generator: DocBook XSL Stylesheets v1.79.1 <http://docbook.sf.net/>
.\"      Date: 2018-01-15
.\"    Manual: perf Manual
.\"    Source: perf
.\"  Language: English
.\"
.TH "PERF_4.15\-HELP" "1" "2018\-01\-15" "perf" "perf Manual"
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.SH "NAME"
perf-help \- display help information about perf
.SH "SYNOPSIS"
.sp
\fIperf help\fR [\-a|\-\-all] [COMMAND]
.SH "DESCRIPTION"
.sp
With no options and no COMMAND given, the synopsis of the \fIperf\fR command and a list of the most commonly used perf commands are printed on the standard output\&.
.sp
If the option \fI\-\-all\fR or \fI\-a\fR is given, then all available commands are printed on the standard output\&.
.sp
If a perf command is named, a manual page for that command is brought up\&. The \fIman\fR program is used by default for this purpose, but this can be overridden by other options or configuration variables\&.
.sp
Note that perf \-\-help \&.\&.\&. is identical to perf help \&.\&.\&. because the former is internally converted into the latter\&.
.SH "OPTIONS"
.PP
\-a, \-\-all
.RS 4
Prints all the available commands on the standard output\&. This option supersedes any other option\&.
.RE
.SH "PERF"
.sp
Part of the \fBperf\fR(1) suite