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I use ubuntu 12.04 with KDE and had two times a strange terminal or something like this appearing for like 2 seconds and then closing again in the upper right corner.

I did not see what it exactly was and it was neither konsole (default terminal) nor xterm (which is white here by default). It was some black windows with white text a bit looking like an xterm with the right configuration for a white-on-black look. It scrolled fastly some text and then disappeared. I did nothing to start it, i was using firefox the first time and reading a pdf in okular the second time.

It was too fast to recognize any text, from the appearance it could have been something like a man page scrolling in there. I am not sure if it was a terminal and i could not look fast enough, if it had a window decoration or not.

Does anybody know, what this was and what i did to start it? It seems like either some bug or even malware. But i guess a malware would be clever enough to run its stuff in a shell without a terminal window. Some way to reproduce what may cause somthing like this would be interesting as well.

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  • Consult some logfiles in /var/log for jobs having been started at that time, like a cron job. Start with messages and daemon, maybe syslog too.
    – ott--
    Jul 31, 2015 at 13:11
  • I already checked logfiles, processes, netstat and my crontab, but could not find anything useful. I think a X11 program will have been started by another graphic program, though.
    – allo
    Jul 31, 2015 at 13:43

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