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Skalman65
Asked: 2018-05-05 20:21:38 +0800 CST

Help me understand the different parts of journalctl´s error code

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Journalctl's output may look like this:

maj 01 10:13:02 kontor pulseaudio[1198]: [pulseaudio] pid.c: Daemon already running.

Trying to understand the different parts of the error message, apart from the error code itself

That it presents from the left counted

Date / Time - Hostname - Program

that it is OK, but now not fully aware what (in this case) [1198] means and how I can use it in the troubleshooting?

And why [Pulseaudio] is in brackets the second time?

then pid.c: in front of the colon.

Has search a lot without finding almost anything on the web.

I think that [1198] is a upstartnumber (given by the system) but I can't find how to use?

can anyone help me out here, or link to a web page that explains this

error-handling systemd-journald

1 Answers

  1. Best Answer
    maj 01 10:13:02 kontor pulseaudio[1198]: [pulseaudio] pid.c: Daemon already running.
^--date--time-^ ^host^ ^prcesname^^PID^: ^program generated content................^

    prcesname is really Process Name, and PID is the Process ID. The program generated content is produced by the program (pulseaudio in this case), and can be anything. Here, the [pulseaudio] program, inside it's pid.c module, found that the (pulseaudio) daemon was already running, causing the attempt to Start a daemon to fail.

    See man logger;man 3 syslog;man -k pid.

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