# man > strace-log-merge(1)

[STRACE-LOG-MERGE(1)](https://www.chedong.com/phpMan.php/man/STRACE-LOG-MERGE/1/markdown)                    General Commands Manual                   [STRACE-LOG-MERGE(1)](https://www.chedong.com/phpMan.php/man/STRACE-LOG-MERGE/1/markdown)



## NAME
       strace-log-merge - merge strace -ff -tt output

## SYNOPSIS
       **strace-log-merge** _STRACE_LOG_

### strace-log-merge --help

## DESCRIPTION
       **strace-log-merge**  merges the output of **strace** **-ff** **-tt[t]** command, prepending PID to each line
       and sorting the result using time stamp as a key.

## OPTIONS
       **--help** Show program usage and exit.

       _STRACE_LOG_
              Output file name prefix of files produced by a **strace** **-ff** **-tt[t]** command.

## EXIT STATUS
       **0**      Success

### Non-zero
              Error occurred: either no argument specified (in that case a  usage  is  printed),  or
              something went wrong during the processing of _STRACE_LOG_.*  files.

## USAGE EXAMPLE
       $ 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 +++


## NOTES
       _strace-log-merge_  does not work well with **strace** logs generated by **strace** **-tt** invocation that
       pass midnight, as those lack the information required for the proper sorting.  Employing  the
### -ttt

## BUGS
       _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 _strace_ session match _STRACE_LOG_.*  glob pat‐
       tern.

## HISTORY
       The initial version of _strace-log-merge_ was written by Denys Vlasenko in 2012.

## REPORTING BUGS
       Problems  with  **strace-log-merge** should be reported to the **strace** mailing list at <strace-de‐
       <vel@lists.strace.io>>.

## SEE ALSO
       [**strace**(1)](https://www.chedong.com/phpMan.php/man/strace/1/markdown)



strace 5.16                                  2022-01-01                          [STRACE-LOG-MERGE(1)](https://www.chedong.com/phpMan.php/man/STRACE-LOG-MERGE/1/markdown)