A log is a record of events during a particular time range. Questions about interpreting logs on Ubuntu or controlling logging.

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ACPI spamming: 1 arguments were passed to a non-method ACPI object (RegionField)

I have installed Ubuntu 16.04 Desktop on my Thinkpad Yoga 12 laptop ( http://shop.lenovo.com/us/en/laptops/thinkpad/yoga-series/yoga-12/#tab-tech_specs ), using UEFI mode. My logs are getting spammed ...
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Permission denied due to file access restriction logs

When a user tries to perform an operation on a file not allowed due to the file's permissions, is this event logged somewhere in Ubuntu?
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init.d script doesn't log to /var/log/boot.log

The script below is working fine at system startup. However, its log messages don't show in /var/log/boot.log, when the system boots. I compared it with other init.d scripts and couldn't reach any ...
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Error messages in log about com.canonical.Unity.Scope.Home

I see the following messages in my log-files: Jul 20 09:52:29 SysH-PC3 com.canonical.Unity.Scope.Home[1913]: (unity-scope-home:12285): libunity-protocol-private-WARNING **: protocol-scope-discovery....
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What can I do regarding this errors found in boot.log?

Timed out waiting for device dev-disk-by\x2duuid-896874fe\x2d2dd8\x2d405e\x2d97c3\x2dc72b0db1b606.device. [DEPEND] Dependency failed for Cryptography Setup for cryptswap1. [DEPEND] Dependency failed ...
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How to access “Previous Reports” on Ubuntu GNOME?

In Ubuntu (Unity) in the unity-control-center one can access one's history of reports by going to Security & Privacy > Diagnostics > Show Previous Reports. But there seems to be no such ...
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Difference between “install” and “installed” in dpkg.log [migrated]

Some recently installed packages appear like so: [date] [time] install [package name] [date] [time] installed [package name] but some packages (e.g. man-db which I haven't manually installed) ...
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Problems with distribution upgrade

I have been trying to upgrade from Ubuntu 14.04 to Ubuntu 16.04 LTS but when I run sudo do-release-upgrade, I get the following error: Could not calculate the upgrade An unresolvable problem ...
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Where can I find the log files for mounting disks?

I understand if I boot from a live cd I can see all the system logs under System > Administration > File Log Viewer I have a major error with a disk not mounting and I want to trace i tback to the ...
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How to see log to find a boot problem

I want to find the cause of a boot problem I have tried ls -ltr /var/log from antony@antony which gives me login incorrect can someone tell me what command to use to see what has upset the boot ...
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2answers
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Ubuntu 14.04 - logrotate does not rotate /var/log/* (rsyslog config)

I have a bunch of Ubuntu 14.04 servers I manage where logrotate is not rotating anything under /var/log/*. I'm going to assume its an issue with the /etc/logrotate.d/rsyslog as I see other entries in /...
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1answer
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Accidentally deleted /var/log/syslog

I accidentally deleted /var/log/syslog and now I can't get rsyslog working. I was googling, I tried everything I found. To be precise: I created syslog with touch. Then I set chmod and chown ...
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2answers
32 views

Are log files written to when a buffer fills or in 'realtime'?

I have a script running which pipes its output through another script; that wrapper script adds a timestamp to each line of the log. However the data is being written to the log file in chunks of ...
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1answer
33 views

Redirect iptables logging to another logfile

I have followed the recipe by @Gilles in this answer. I succeeded, but the problem is that the iptables logging now goes into 3 log files, syslog, kern.log and iptables.log. Ideally, I want the ...
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33 views

How to stop logging user login history?

I have noticed a History button in System Settings > User Accounts on my newly installed Ubuntu 15.10 system. It brings up a log of recent login sessions for the selected user. How can I disable ...
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1answer
36 views

what does this mean for a module to have a bad taint?

When looking at the syslog (dmesg), I get several of: <module name>: module has bad taint, not creating trace events What does this mean ?
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28 views

Where Ubuntu Gnome Looking Glass / extensions logs are stored?

I've started to playing around with extensions for ubuntu gnome, gnome-shell version 3.18.5. During the development I've encountered a problem finding logs from my extension or even the one used ...
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1answer
49 views

How to see information of a WiFi hotspot I once tried to connect to?

I would like to see some information, including MAC address, of a WiFi hotspot that I tried to connect to and failed in the past. I can not try connecting to it again any more, because it is not a ...
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Massive log files on Ubuntu 16.04

I recently installed Ubuntu 16.04. For some reason I have massive log files. For example: kern.log is 10.5 GB big and syslog is 152 MB. I already tried rotating them, but I wanna know what's making ...
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5answers
690k views

Where is the cron / crontab log?

I want to verify if my cron job is executing and what time. I believe there is a log for my sudo crontab -e jobs, but where? I searched google and it I found references to look in /var/log (...
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4answers
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Very large log files, what should I do?

(This question deals with a similar issue, but it talks about a rotated log file.) Today I got a system message regarding very low /var space. As usual I executed the commands in the line of sudo ...
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bash.bashrc damaged..ubuntu log in loop and no interactive programs working from terminal

I have accidentally deleted the content of /etc/bash.bashrc and now I cannot log in as it gives me a loop and I cannot run any interactive programs from the terminal. When I try, I get this error: ...
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6k views

Redirect UFW logs to own file?

Is there a way I can easily redirect the entries for UFW to their own log file at /var/log/ufw instead of filling up /var/log/syslog as it's becoming tricky to find solutions to problems with all this ...
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1answer
105 views

How to include millisecond in syslogs?

I have configured rsyslog.conf file in /etc to include my own logs as syslogs in a file at /var/logs. But after opening the file I got this: Jun 5 10:09:09 lab-Altos-G330-Mk2 slog[19689]: Hello1 Jun ...
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Is there software which time- tracks window & application usage?

Is there a software which keeps time of my activities and gives a report? Based on focused window and window title. Report would just show time spent for specific window and its title like: ...
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24 views

Logcheck not sending email

I just installed logcheck, modified its config to my email address, but when i prompt a test run i dont get the email. If i redirect the output to STDOUT i get the correct infos. I read somewhere ...
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Understanding the reason behind a freeze using system logs to file bug

My Ubuntu laptop just froze a few minutes ago (like it is frequently doing) making me reboot it using the hardware forced way. I would like to know the cause behind it so that if necessary I can file ...
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42 views

Graylog2 Windows logging from a current syslog-ng loghost aggregator

So our environment currently has a log host aggregator sending and receiving logs to 2 hosts (both linux and windows). I just introduced graylog to our environment and it doesn't appear to be ...
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1answer
70 views

Apache2 failed to start on Ubuntu 14.04, log file is empty

I just try to install apache2 on my 14.04 Ubuntu server but I get an error: * Starting web server apache2 (98)Address already in ...
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1answer
32 views

How do I debug openstack-install command?

Is there a debug command or log that can be viewed to look into sudo openstack-install error
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1k views

No more boot logging since 16.04?

I noticed that my /var/log/boot.log file has date 2016-04-22, last time I booted in 15.10. Where are Xenial boot.log files located?
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1answer
40 views

logkeys log file has wiered output

I have a Ubuntu 15.10 install and recently installed logkeys. and I followed up with the log file with after installation and creating the log file. tail --follow test.log it generates weired ...
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50 views

How can I log all notify-send actions?

I keep getting very strange notifications which go away before I can read them, they are long, and appear at random times, the most recently one came up was during a kernel upgrade, it had a strange ...
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21 views

Is there a file with system log?

In Ubuntu there's a program called System log, with log of system and all that you do with Ubuntu. I would ask if would be possible create a file.txt that refresh automatically with log from 'System ...
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620 views

Is there a log of all activity I could open in terminal?

I'd like to have a terminal opened and study the processes and everything happening in a regular use of Ubuntu. What commands and files can I use to see the logs in real-time? Thanks.
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Troubleshooting logkeys keylogger - Logkeys dumping wrong character in the log file

This is what I am doing after installing logkeys. sudo logkeys -s sudo nano /var/log/logkeys.log
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Troubleshooting Logkeys Keylogger Ubuntu 14.04 - Empty log file

This is what I am doing. sudo gedit /var/log/logkeys.log Then I would look at my log file to see if it worked and saw that it was blank! Is there any way that I can fix this so I can be able to ...
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2answers
61 views

Get unique lines from log using grep and tail

I have the following log file. I want to extract the last 10 unique entries from this file. Is it possible to do with grep and tail? 2016-04-18 10:13:11,925 (glastopf.glastopf) 115.239.248.245 ...
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54 views

Where can I find my call history on Ubuntu Phone?

This seems oddly missing on my nexus 4. I received a phone call the other day, and I forgot to add her as a contact. Now I am searching for that phone call, and I can't find a log readily accessible ...
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Can I deiconify a console on a certain output?

I would like to have a terminal window which deiconifies as soon as it shows an output. With it I would monitor log messages on a terminal -- say with a tail -f. The terminal would loom in ...
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1answer
62 views

Log file bloat due to nouveau

Both my kern.log and syslog files have grown to >50Gb and contain a few hundred million lines of: Feb 23 23:32:43 Yawning-Angel kernel: [396111.179453] nouveau E[ PFIFO][0000:05:00.0] PBDMA0: ch 2 [...
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40 views

How to keep record of Logins and Actions

I've just created a Windows Server 2012 Domain and I inserted an ubuntu 14.04LTS laptop in the domain, which is responsible for file exchanging with a USB between the domain users. How can I keep a ...
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1answer
30 views

Logging Bad Sectors

Is there a program that will maintain a log of growing bad sectors? I want to measure the regression of my hard drive automatically as opposed to manually taking screenshots. UPDATE: After running ...
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Scrambled screen everytime trying to execute a program

I am new to ubuntu and just installed 14.04 32 bit on an old machine for testing. It is a lenovo desktop which the spec is as following. After the installation, the screen will scramble everytime I ...
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How to restrict root's installation capabilities

I've found out some time ago that users who install software via sudo apt-get install ... or any of the GUI tools (Update Manager or Software Center) show up in the /var/log/auth.log which makes it a ...
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Ubuntu server stuck on splash screen?

After restart my ubuntu server gets stuck to splash screen? All programs start up i can login with alt + f2 and open "log" "console" (ssh and samba server works) whole thing ends in stopping cpu ...
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3answers
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Where are the Apache and PHP log files?

I've installed Apache, PHP, and MySQL on Ubuntu 10.10 desktop edition, and it's working fine. Except I have no clue where to look for Apache or PHP log files.
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how to trace errors and crashes in Ubuntu itself?

I'm new in Linux, My Ubuntu has started crashing for some days randomly and closing everything, going back to login screen!! Is this the same as when windows hangs and you kill a program? (but ...
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Did my ubuntu shutdown properly last time?

When I came back to my laptop it was shut down. Last time it suddenly turned off. This time as I was away I do not know what has happened. I even cannot remember if I shut it down or not. I read the ...
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18k views

GUI for watching logs (tail and grep)

Could you recommend a GUI application with powerful log watching capabilities? Generally it would work as tail -f in GUI, but on top of that following features would be very useful: filtering out ...