4 Ways to Watch or Monitor Log Files in Real Time

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Matei Cezar

I'am a computer addicted guy, a fan of open source and linux based system software, have about 4 years experience with Linux distributions desktop, servers and bash scripting.

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8 Responses

  1. Kunal says:

    Hi, i am new to Linux admin. When I type the following command in my terminal its shows that NO SUCH FILE AND DIRECTORY.

    $ sudo tail -f /var/log/apache2/access.log
    

    Also when I typed the following command, it’s shows same result NO SUCH FILE AND DIRECTORY.

    $ sudo tail -f /var/log/syslog
    

    What should I do now?

    Please help

    Thank you

    • Ravi Saive says:

      @Kunal,

      To have this file (/var/log/apache2/access.log) accessible, you need to have Apache installed and running on your system. To view syslog files, you can launch GUI Log File Viewer from the Ubuntu dash.

      To view logs from terminal, you can use dmesg as shown.

      $ dmesg
      $ dmesg | grep something
      
      • Kunal says:

        @Ravi,

        Thanks for the reply

        When I typed dmesg command it opens something but not log file.

        • Ravi Saive says:

          @Kunal,

          Could you check that the service syslog is running using following command.

          $ service syslog status
          

          If it is not running, then re-configure it using following command.

          $ sudo dpkg-reconfigure inetutils-syslogd
          
  2. dudeness says:

    You forgot the watch command.

    # watch -n1 -d dmesg
    
  3. fliteshare says:

    There should only be ONE systemlog to go look in. The plethora of logs merely serve to obscure an investigation.

    In which case the log-tool would be (smart) filter functions

  4. Umair says:

    have been using multitail for quite a while.

    But can i ask which font you are using and how did you set that syntax highlighting.

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