--- /dev/null
+.\" Copyright (c) 2017 The strace developers.
+.\" All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\" notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\" notice, this list of conditions and the following disclaimer in the
+.\" documentation and/or other materials provided with the distribution.
+.\" 3. The name of the author may not be used to endorse or promote products
+.\" derived from this software without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+.\" IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+.\"
+.\" Required option.
+.de OR
+. ie \\n(.$-1 \
+. RI "\fB\\$1\fP" "\ \\$2"
+. el \
+. BR "\\$1"
+..
+.\"
+.TH STRACE-LOG-MERGE 1 "@MANPAGE_DATE@" "strace @VERSION@"
+.\"
+.SH NAME
+strace-log-merge \- merge strace \-ff \-tt output
+.\"
+.SH SYNOPSIS
+.SY strace\-log\-merge
+.IR STRACE_LOG
+.YS
+.SY strace\-log\-merge
+.OR \-\-help
+.YS
+.\"
+.SH DESCRIPTION
+.B strace\-log\-merge
+merges the output of
+.B strace \-ff \-tt[t]
+command, prepending PID to each line and sorting the result using time stamp as
+a key.
+.\"
+.SH OPTIONS
+.\"
+.TP
+.B \-\-help
+Show program usage and exit.
+.TP
+.I STRACE_LOG
+Output file name prefix of files produced by a
+.B strace -ff -tt[t]
+command.
+.SH EXIT STATUS
+.TP
+.B 0
+Success
+.TP
+.B Non-zero
+Error occurred: either no argument specified (in that case a usage is printed),
+or something went wrong during the processing of
+.IR STRACE_LOG ".*"
+files.
+.\"
+.SH USAGE EXAMPLE
+.sp
+.nf
+.ft CW
+$ strace -o sleepy -ff -tt -e trace=execve,nanosleep \\
+ sh -c 'sleep 0.1 & sleep 0.2 & sleep 0.3'
+$ strace-log-merge sleepy | fold -w 72 -s
+13475 21:13:52.040837 execve("/bin/sh", ["sh", "-c", "sleep 0.1 & sleep
+0.2 & sleep 0."...], 0x7ffde54b2450 /* 33 vars */) = 0
+13478 21:13:52.044050 execve("/bin/sleep", ["sleep", "0.3"],
+0x5631be4f87a8 /* 33 vars */) = 0
+13476 21:13:52.044269 execve("/bin/sleep", ["sleep", "0.1"],
+0x5631be4f87a8 /* 33 vars */) = 0
+13477 21:13:52.044389 execve("/bin/sleep", ["sleep", "0.2"],
+0x5631be4f87a8 /* 33 vars */) = 0
+13478 21:13:52.046207 nanosleep({tv_sec=0, tv_nsec=300000000}, NULL) = 0
+13476 21:13:52.046303 nanosleep({tv_sec=0, tv_nsec=100000000}, NULL) = 0
+13477 21:13:52.046318 nanosleep({tv_sec=0, tv_nsec=200000000}, NULL) = 0
+13476 21:13:52.146852 +++ exited with 0 +++
+13475 21:13:52.146942 --- SIGCHLD {si_signo=SIGCHLD,
+si_code=CLD_EXITED, si_pid=13476, si_uid=1000, si_status=0, si_utime=0,
+si_stime=0} ---
+13477 21:13:52.247782 +++ exited with 0 +++
+13475 21:13:52.247885 --- SIGCHLD {si_signo=SIGCHLD,
+si_code=CLD_EXITED, si_pid=13477, si_uid=1000, si_status=0, si_utime=0,
+si_stime=0} ---
+13478 21:13:52.347680 +++ exited with 0 +++
+13475 21:13:52.347786 --- SIGCHLD {si_signo=SIGCHLD,
+si_code=CLD_EXITED, si_pid=13478, si_uid=1000, si_status=0, si_utime=0,
+si_stime=0} ---
+13475 21:13:52.348069 +++ exited with 0 +++
+.ft R
+.fi
+.sp
+.\"
+.SH NOTES
+.I strace-log-merge
+does not work well with
+.B strace
+logs generated by
+.B strace -tt
+invocation that pass midnight, as those lack the information required
+for the proper sorting.
+Employing the
+.B -ttt
+option in the respective
+.B strace
+invocation should solve the problem.
+.\"
+.SH BUGS
+.I strace-log-merge
+does not perform any checks whether the files specified are in the correct
+format and implies that only files from a single
+.I strace
+session match
+.IR STRACE_LOG ".*"
+glob pattern.
+.\"
+.SH HISTORY
+The initial version of
+.I strace-log-merge
+was written by Denys Vlasenko in 2012.
+.\"
+.SH REPORTING BUGS
+Problems with
+.B strace-log-merge
+should be reported to the
+.B strace
+mailing list at <strace\-devel@lists.sourceforge.net>.
+.\"
+.SH "SEE ALSO"
+.BR strace (1)
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