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NAME | SYNOPSIS | DESCRIPTION | OPTIONS | EXIT STATUS | USAGE EXAMPLE | NOTES | BUGS | HISTORY | REPORTING BUGS | SEE ALSO | COLOPHON |
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STRACE-LOG-MERGE(1) General Commands Manual STRACE-LOG-MERGE(1)
strace-log-merge - merge strace -ff -tt output
strace-log-merge STRACE_LOG
strace-log-merge --help
strace-log-merge merges log files produced by the strace -ff
-tt[t] command. It prepends the Process ID (PID) to each line and
sorts the combined output chronologically by timestamp.
--help Show program usage and exit.
STRACE_LOG
Specifies the file name prefix for the log files produced
by a strace -ff -tt[t] command. The utility will read all
files matching the STRACE_LOG.* pattern.
0 Success
Non-zero
An error occurred. This can be due to a missing argument
(in which case usage information is printed) or a failure
during the processing of the STRACE_LOG.* files.
$ 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 +++
strace-log-merge may fail to correctly sort logs that were
generated with -tt and span across midnight. This is because the
standard -tt timestamp lacks date information, which is required
for proper sorting. Using the -ttt option with strace solves this
problem, as its timestamp format includes the date.
strace-log-merge does not validate the format of the input files.
It assumes that all files matching the STRACE_LOG.* glob pattern
are correctly formatted log files from a single strace session.
The initial version of strace-log-merge was written by Denys
Vlasenko in 2012.
Problems with strace-log-merge should be reported to the strace
mailing list at <strace-devel@lists.strace.io>.
strace(1)
This page is part of the strace (system call tracer) project.
Information about the project can be found at ⟨http://strace.io/⟩.
If you have a bug report for this manual page, send it to
strace-devel@lists.sourceforge.net. This page was obtained from
the project's upstream Git repository
⟨https://github.com/strace/strace.git⟩ on 2025-08-11. (At that
time, the date of the most recent commit that was found in the
repository was 2025-08-06.) If you discover any rendering
problems in this HTML version of the page, or you believe there is
a better or more up-to-date source for the page, or you have
corrections or improvements to the information in this COLOPHON
(which is not part of the original manual page), send a mail to
man-pages@man7.org
strace 6.16.0.1.ca9fa 2025-07-02 STRACE-LOG-MERGE(1)
Pages that refer to this page: strace(1)
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HTML rendering created 2025-09-06 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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