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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How to get exit status of anacron jobs to catch errors?

It is easy to find failed cron jobs by setting log_level but how to do it with anacron?
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271 views

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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23 views

How to record chrome cpu and memory usage

Is it possible to record google-chromes cpu and ram usage?? with terminal or other software that will do the same task ?? Thank you in advance
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16 views

where can I find tftp-hpa server's log file?

I am using tftp-hpa in ubuntu 12.04, where can I see the verbose log of the server? I checked on syslog. there is no log from tftp-hpa server.
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32 views

How can I find the reason ubuntu crashed [duplicate]

As the title, which log file i should pay attention? I don't use X (use ubuntu in text mode), I have python program which use much memmory . When the system break. The ssh can't connnect, keyboard and ...
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9 views

Faillog empty - should i be worried?

On my machine of 4 years old, I have probably mistyped my password a zillion times. Yet, nothing shows up in the faillog. Doing faillog -a gives me a bunch of: username 0 0 01/01/70 ...
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how to track a crash when changing from X :1 to X :0?

I need to track on 14.04 a crash that often happens here: I open a new X at :1 (that sometimes goes to ctrl+alt+f8 others to f9). But when I try to go back to X :0 with ctrl+alt+f7, it crashes ...
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19 views

Minecraft Bukkit server spams logfile - Ubuntu 12.04

I have a virtual server (Ubuntu 12.04) and a serious problem with Minecraft/Bukkit. I've installed a fresh bukkit 1.6.4 on my virtual server and made some upstart script for it. Here is the ...
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23 views

Apache2 and PHP error logging

I've been running a local apache2 on a Ubuntu 12.02 LTS with the latest PHP version installed. I do need to debug some WordPress code to find out why certain values are not set in the database. I ...
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2answers
178 views

bash script to back up file [closed]

I have a few files to be backed up. I need a script to check line number of a file and if it exceeds, say 8000 lines, it will simply zip it and name it with date prefix format. I need your help.
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9 views

Where does xhost (or related X11 services) store access denied logs

Every time I setup a new computer for remote access I have problems getting it added to the xhost access list. I eventually get each system added. It would save a lot of time if I could locate the ...
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1answer
16 views

Getting the names of users on apt-get logs

I am administering a Ubuntu server (Trusty) where several users have been given permission to run apt-get, but only two administrators have full sudo permission. I want to keep track of who installs ...
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How do I find logs that report the cause of a system crash?

My computer with Trusty is often rebooting, apparently in a random way. I have looked in system register but there are so many logs that is quite difficult to find the ones which only report the error ...
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6 views

Is there a log for connected peripherals? [duplicate]

I need a log of all devices I connected to my Ubuntu - even if they aren't connected anymore. So a log of all connected peripherals in Ubuntus lifetime would be perfect. Does that exist?
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6 views

Log or View Log of all USB operations

If I want to see the log of all the USB devices that were connected to my machine is this feature already built in, if not is there a way to do so. Furthermore, what if alongside I also want to know ...
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1answer
31 views

How can I identify the program that has written information to a log file?

I recently got a message that something had failed to sudo on my Ubuntu laptop. At the time, I don't believe I was running anything that would need sudo. The messages that appeared in ...
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1answer
141 views

Is there a “Settings history”, or a log of changes in configuration?

P.S. I have just found Is it possible to monitor dconf for changes? It, together with the answer by Volker Siegel, answers my question. A note for Xubuntu users: some settings are not in dconf, but in ...
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1answer
14 views

How can I log acpi temperatures?

I'm trying to debug why my computer randomly shuts down sometimes, and to rule out temperature issues (since I don't think that's the case) I would like to log the output of acpi -t somewhere so when ...
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36 views

New to webservers

My boss asked me to take a look at the web server if I could and see what was causing some issues. It looks like I have tonnes of logs and I am not sure what to make of them. Any help that would be ...
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18 views

Where are wireless or internet connection logs? [duplicate]

I want to go into a log file and see what happens when my Wi-fi drops, then take it elsewhere? Where can I find this?
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56 views

Using Port 587 for Secure Submission

Testing from swaks, mail is delayed indefinitely. I believe that the local mail server is configured correctly, as per the ehlo responses: thufir@dur:~$ thufir@dur:~$ telnet localhost 25 Trying ...
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99 views

Can't log in Ubuntu 14.04 [duplicate]

I have a problem that started just yesterday after using upgrade version of Ubuntu 14.04 since its release. Namely, all of a sudden, Ubuntu won't accept my password. I changed it with passwd user, ...
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41 views

how to keep more than 2 log files?

In search of occasional boot problems, I would like to keep in the log files more than 2 ones that are kept now. For example, in /var/log, I have Xorg.0.log and Xorg.0.log.old that are created by two ...
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How do I tell why it takes so long to boot up/login? [duplicate]

I'm running ubuntu 14.04 on a pretty new laptop, but it takes longer than I think it should (since the laptop is quite new) to start up and log in for the first time after booting. If I log out and ...
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2answers
79 views

Cron doesn't execute one of the scheduled jobs

I'm using a lubuntu desktop, distribution Ubuntu 13.10, i686. This is my problem: in the job list scheduled by cron a job hasn't effect, but in /var/log/syslog its execution is traced. This is the ...
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22 views

Change location of log file for “update-alternatives”

I am currently managing my logging system but while setting all log location a problem occured: I want to change the location of the file /var/log/alternatives.log and I have done some research. This ...
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1answer
25 views

Config --no-log for an init deamon job

I have a proccess configured under /etc/init and it runs by the init deamon, and want this proccess to stop sending logs to the /var/log/upstart dir. I read this document: ...
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1answer
31 views

Failure during boot with service failures (slowing down PC)

While Ubuntu is starting and showing it's boot screen an error occurs for several times saying: failed to execute 'lib/udev/socket:4/org/freedesktop/hal/udev_event' ...
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1answer
28 views

KDE, how to have “tail -f” constantly on a dedicated panel?

Plasma has this nice plasmoid called File Watcher. At work I have 2 monitors. I would like to put this plasmoid on an empty panel on the second monitor. So that tail -f /var/log/apache2/error.log ...
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186 views

Rotating a log file in my home directory on Ubuntu Server 14.04 LTS

I have a log file ircd.log in /home/irc. I want to rotate it daily at 00:00 and keep 7 days. I want the rotated log files to be saved as ircd.log.YYYYMMDD for example ircd.log.20140505. Can someone ...
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1answer
53 views

Where can I see the text that is displayed during boot?

During boot, there are three stages : Before grub, I have two lines of text flashing telling me that something is not found Then there is the grub menu Then there is the normal boot process On ...
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69 views

Tiger: `rtm` is listening on socket XXXX

On my Ubuntu serve 12.04 LTS, Tiger is reporting a lot of stuffs like this: OLD: --WARN-- [lin002i] The process `rtm' is listening on socket 60404 (UDP) on every interface. NEW: --WARN-- [lin002i] ...
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Logwatch: Illegal users & font color

I am using logwatch on my ubuntu 12.04 LTS server. I get the results by e-mail. There are two aspects I would like to customize, but I can't find how: Under SSHD Section, there is: Illegal users ...
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1answer
60 views

Screen flashing black just after booting

I've just been noticing, after updating to Ubuntu 14.04 that my screen flashes black at the log in screen. only for a quick second - but kinda weird seeing as it hadn't happened before. It only ever ...
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2answers
60 views

How to create a txt log file of a “make install”?

I trying to install a program and I would like to see a txt file with the details of the operation. I think it is called a log file, am I right ? Once, someone told me to do this command: `make ...
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Ubuntu 12.10 keylog problem

I have Ubuntu 12.10 running and I want to do keylog so I did the following: sudo apt-get update sudo apt-get install logkeys sudo logkeys –s –o /home/user/Desktop/output.log It creates a log file ...
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117 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
194 views

Ubuntu 14.04 Call Trace

I am seeing a Call Trace in kern.log - system will shutdown cleanly Apr 14 20:58:00 kernel: [ 4742.743373] WARNING: CPU: 0 PID: 26176 at ...
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Log in problems ubuntu 13.04

I have just installed ubuntu 13.04 as a dual alongside windows 7 using the wubi installation . No as I try to log in I can only log in as guest , has anyone else encounters this problem and if so have ...
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1answer
139 views

Tens of thousands of failed/denied SSH login attempts [closed]

Recently a few friends and I came up with an idea for an app. To facilitate the creation of it, we set up LAMP on an Ubuntu Server 12.04. This box is running from my home. We've set up 3 user ...
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1answer
210 views

How to make sudoreplay work?

I recently discovered sudoreplay whose manpage says that it replays sudo session logs. But I am not sure how do I make it work. For whatever little commands I ran it kept on saying that ...
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1answer
67 views

compression setting for log files in /var/log

For the log files in /var/log, it appears that the wtmp and also the rotated wtmp.n are not ASCII file and can only be read by the last command, so if they are compressed, one has to first uncompress ...
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3answers
49 views

do,while in bash

I want to get RX and TX from each network adapter, so to get RX and TX from one network adapter, i used this commands : cat /proc/net/dev | grep 'wlan0' |awk '{if ($2) print $2}' | awk -v ...
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1answer
64 views

log file rotation setting

It is a bit weird that in my /var/log dir, many files such as syslog, auth.log all seem to have older log files (rotated by [0-9], some like dpkg.log even rotates to 12 now), but the important wtmp ...
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1answer
117 views

how to simplify the info contained in /var/log/auth.log

my /var/log/auth.log contains quite some lines such as "reverse mapping checking getaddrinfo for 224.51.174.61.dial.wz.zj.dynamic.163data.com.cn [61.174.51.224] failed - POSSIBLE BREAK-IN ...
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268 views

Where is the log of pppd in ubuntu 13.10?

I am trying to find the debug infromation of pppd on Ubuntu 13.10. I have tried to read the mannual, but I found that the location of the log is for older version Ubuntu. what I have input sudo pon ...
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Open lastlog file from outside

Currently we took a backup of the lastlog file from Server1 and took it to Server2, however, we cant open it since the lastlog command opens only the lastlog of the server we are currently in, but not ...
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39 views

How can you read that messages that are shown during boot before X starts?

I edited in my /etc/default/grub, the following line: GRUB_CMDLINE_LINUX_DEFAULT=quiet After that, sudo update-grub, and it now shows me the messages during boot. but how can I read that messages ...
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multiple authentication errors

I have recently installed v12.04, dual booted on XP netbook. It seems to be working ok, but several of the following appear in the authentication log (on Ksystem log). These messages followed a ...
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1answer
224 views

How do I get information from the logs on my computer when I only have access to the command line?

For various reasons I can no longer access my graphical desktop, and can only login via a tty (Ctrl+Alt+F1 through F6 by default). To help diagnose and solve my problem I need to look through the ...