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 check crash log of qtcreator?

My qtcreator 3.0.1 randomly crashes.How can I view logs of it, to look for future solutions?
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7k views

Unable to locate tomcat log file

I am not able to locate the tomcat log files on ubuntu. I looked into /var/log/tomcat6 but the output are these file, catalina.2012-11-23.log catalina.out localhost.2012-11-23.log ...
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files where break-in attempts are logged

Ubuntu Server with Apache hosting multiple websites and mail-servers. Besides /var/log/auth.log, are there other places where break-in attempts are logged? Context: I used to have a lot of break-in ...
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Location of account-specific log files

Where do I store log files for stuff specific to a particular account, like say a backup of its home directory? /var/log/ seems to be for stuff common to the whole system or components that aren't ...
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2answers
71 views

How do you get those nifty transparent log displays?

So I've seen plenty of displays of transparent logs or running logs or htop instances on what appear to be fixed areas of a desktop. I think this is something like root-tail but I can't get root-tail ...
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3answers
258 views

How can I log file access from users?

I have to give someone access to my computer, but I want to know afterwards which files he accessed... Can I create a log file for that? Is there an existing program for that? I know how to track ...
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1answer
20 views

Log Analysis…How To [duplicate]

How do I find out information about logs that are in a file on my desktop called "logs," such as what application from which they were created, the sizes of the exports logged, what the most common ...
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2answers
3k views

Log files (CUPS) grow so fast!

the past few days I faced a strange issue with my computer. I discussed it here: Server logs are filling my hard disk, how do I fix this? Shortly, log files (in cups folder) grow so fast! I did solve ...
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1answer
144 views

syslog doesn't exist!

I use 14.04 and I don't have syslog. I'm a fresh user of Linux, being Windows user for years. When I try tail syslog and that's what out: henrique@henrique:/var/log$ tail -f /var/log/syslog tail: ...
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861 views

How to install and setup graylog-server and graylog-web on Ubuntu from repositroy?

I am trying to setup graylog on Ubuntu 14.04. I tried to find out installation steps on internet I found few links. but their method of installation is manual I mean installation from the source. and ...
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29 views

system log question- auth.log

I'm pretty new here. I was looking at my system logs and noticed this: Jul 21 00:57:47 htpc sshd[13001]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= ...
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1answer
70 views

cupsd using 100% CPU, creating large (80GB+) error_log

Title says it pretty well. A few days ago I realized my Ubuntu machine wouldn't load after login. After some digging around on a liveCD I realized my HDD was at 100% capacity, so I deleted some large ...
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Extracting strings from mail log

I'm trying to extract all lines of text from mail log file that contain specific string (mail address). I know using grep will allow me to search for the address mail.addres@example.org, but how do I ...
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1answer
25 views

CLI view of Software changes [duplicate]

I often install software, remove software, upgrade it etc, and sometimes I need to check on recent changes such as these that I have made. But to do this currently I am having to open the Ubuntu ...
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Swap and Ram both maxed out and nearly froze my computer; what log files should I open, and who should I share them with?

Woah, linux just got gridlocked. Everything started screeching to a halt, not even mouse movement. Just opening tabs on chrome. Jumped to a terminal with ctrl+alt+f5 or something, took me minutes to ...
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1answer
32 views

Is it possible to see a log of all terminal output that occurred after running a command?

I know it's possible to see a history of all commands I've run, but is it possible to see a log of all terminal output that occurred after running a command? Context is that I want to see exactly ...
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37k views

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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50 views

What do these numbers mean in syslog?

I'm trying to determine why MySQL server process is being killed due to out of memory, so am looking at the sylog. Immediately before the 'out of memory' I see lots of lines with differing numbers but ...
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2answers
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Is it possible to log all items installed, modified, removed? (Ubuntu Server 14.04.2)

Is it possible to log automatically when things are installed, removed or modified at my Ubuntu server? It would be nice if I can view the log to see what I (as root) did modify, install, remove. ...
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5answers
3k views

I would like to create a log of all commands typed in terminal

I would like to have a log of all command that are typed on the terminal. I have check "script" but this generates a file with the commands and the responds all together. Is there a way to have the ...
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3answers
360 views

Erased root trash but still getting no memory

I was coding my site on Apache Server. Suddenly an error came and I got the warning This computer has only 1.3 GB remaining. I knew that this was because of the log file in ...
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1answer
55 views

Where does Ubuntu 14.04 log SSH access attempts?

Trying to find out why fail2ban is not working. Where does Ubuntu 14.04 log SSH access attempts?
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1answer
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how to customize logs?

As you know better than me any action in linux store in log files, like /var/log, I was wondering is there anyway to customize the log file in linux, for example in this case I'm the root of my ...
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1answer
57 views

org.freedesktop.DBus.Error.UnknownMethod on auth.log

My auth.log is full with error messages of freedesktop, most of them look more or less as follows: May 25 07:59:40 lati dbus[425]: message repeated 7 times: [ [system] Rejected send message, 3 ...
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2answers
26 views

Is it possible to make ubuntu logless

Can I disable the logging features for any app running under Ubuntu? I want to make my system totally logless is it possible?
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61 views

Linux Crashes every time I word process [closed]

Linux crashes every time I word process. It doesn't matter if its a .doc, .docx or odt file. Doesn't matter if I'm using LibreOffice Writer, AbiWord, or IBM Symphony. It also does it when looking ...
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21 views

Squid3: acl proxy_auth not working in log_access

I'm trying to configure a Squid3 proxy server so that it doesn't log the requests made by authentificated users. I've tried the following config (squid.conf): acl Users proxy_auth REQUIRED log_access ...
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2answers
4k views

create log file just for ssh

I use ubuntu 10.04, contained ssh. I want to create a log file that stores all the activity on ssh (only ssh). Like in /var/log/auth.log but only for ssh. Like /var/log/ssh.log. So, file ssh.log will ...
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How to figure out the reason for automatic log-outs on Ubuntu Unity and GNOME 3?

My installation of Ubuntu 15.04 logs-out automatically on both Unity and GNOME 3, it doesn't do it on GNOME Fallback. Is the Xorg 0 log file the place I should go to in order to figure out the reason ...
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2answers
176 views

Rotate nohup output

I'm working with weblogic 10.3.5 under ubuntu 12.04. Weblogic is started using nohup ./startWebLogic.sh ...
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41 views

How to access user's activity log

How can I get the log that says programs which are opened by user with time stamp . I would like to develop a system to monitor and give suggestions using this user activity log.
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35 views

R/Shiny WebApp logs, running in shell (Ubuntu crontab)

I'm running, using crontab, an R/Shiny WebApp. The crontab expression looks like this: @reboot R -e 'shiny::runApp(...)' | tee /var/log/shiny-server.log I've also tried @reboot R -e ...
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73 views

Computer automatically switches on in the morning

I have a small but annoying problem. For a while my computer has been switching on randomly in the morning around 3:45 AM or so. I have no idea how to fix this, i have checked a lot in the system ...
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5k views

How to see Login history?

Is it possible to see the login history, i mean to see if someone has used the computer in my absence and when he used it . if it is possible, where can i get the log ? if not, is there a program that ...
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1answer
59 views

Crontab - don't log? How can I do it right?

I've search for a answer of my problem but I can't find the right one. So I try it my self. I've got an Ubuntu Server and try to create a TeamSpeak3 Server - check file with loggin function. This ...
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0answers
4k views

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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Exim PanicLog has Non-Zero Size…?

I'm getting the following error from my Ubuntu server: exim paniclog /var/log/exim4/paniclog on (my server FQDN) has non-zero size, mail system might be broken. I found a solution on the web here. ...
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43 views

Cannot find log of application started through init.d script

I have created a .deb package of my scala application using sbt. I have successfully installed the application and am able to run it properly. Now, I want to start my application on system startup. ...
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86 views

LibreOffice 4.3 Error Logs - Where are they?

I cannot find out why LO Base cannot connect to mysql. Where are the log files located? I am running LO 4.3, mysql 5.6, on 14.04LTS.
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Unable to start bootlogd

Since none of my boot messages are logged on Ubuntu Server 15.04, I tried: sudo service bootlogd start Failed to start bootlogd.service: Unit bootlogd.service is masked. This is related to systemd. ...
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2answers
257 views

systemd on 15.04 won't log stdout of unit

I'm currently trying to make a systemd unit as a web server. Currently, my foo.service file looks as follows: [Unit] Description=The Foo Web Server [Service] Type=simple ...
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1answer
28 views

Unable to log in Ubuntu 12.04 LTS

I am unable to log into my Ubuntu 12.04 machine, username and password prompts reapper again. I can only log in as a guest.
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1answer
160 views

Is it safe to delete btmp from log on ubuntu 14.04 rackapace server?

Basically I want to clear unwanted log files from ubuntu 14.04 rackspace cloud server. as files are using too much space. can I remove following log files from server ? /var/log btmp (35.4 MB) ...
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1answer
187 views

Change iptables log format

Is it possible to change the log format of iptables ? I want to add the ssh_client in the log. I have already made an iptables rule for outgoing ssh iptables -I OUTPUT -p tcp --dport 22 -j LOG ...
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1answer
59 views

Lastlog grows to 4.2G after SSH logout

Running a VPS with Ubuntu 12.04.5 LTS. Noticed a spike in disk usage. Turns out the culprit is lastlog. Overwrote it with >/var/log/lastlog. After logging out of the session and logging back in, ...
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3answers
1k views

Why does Ubuntu create the file /var/log/boot?

Why does Ubuntu 10.04.4 and 11.10 create the file /var/log/boot and does not fill it except with the text: "(Nothing has been logged yet.)"?
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330 views

How to view '/var/log/syslog' contents without crash

For various reasons it is necessary for me to check the log of my computer in /var/log/syslog, but this has become a bit of a problem because I am not actually able to view the logs in that file ...
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158 views

Keylogger with Persian and English keymap on Ubuntu

I want to log which characters I use most in a day and to log all pressed keys in all application. How I do this in Ubuntu?
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1answer
37 views

No logs are written to /var/log

I have a problem, that no logs are written to /var/log. -rw-r----- 1 syslog adm 6.4M May 21 2014 syslog -rw-r----- 1 syslog adm 5.7M May 21 2014 daemon.log -rw-r----- 1 syslog adm 494K May 21 ...
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2answers
97 views

Logging every time a command is run

I want to log every time I run a certain type of command in the terminal. For example, every time I run: sudo apt-get install [something] I want to add [something] to a log file in my home ...