Adding messages, mostly warnings and/or errors, to a log file.

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Record Failed Password

we use an external wireless card to create a hotspot and to share wifi with other devices in the office. we do this because it creates an internal ip which i tihnk helps isolate traffic from the rest ...
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12 views

Error nbd-server.allow no such file or directory [on hold]

When I try to login in a client the server logs record this: tail -f /var/log/syslog nbd-server[2263]: Can't open authorization file /etc/ltsp/nbd-server.allow (No such file or directory).
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32 views

What is the best way to limit sudo access? [closed]

I have set of users where I need to give them sudo permission to run some programs. But at the same time, I don't want to take a chance in setting things in fire as they have sudo privilege. How to ...
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2answers
28 views

How to log output of apt-get upgrade to .txt file

How do I log the output of apt-get upgrade to a .txt file. I read the man page and the -q option mentions formatting the output for logging. The reason I am asking this question is because I would ...
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1answer
20 views

What to do about syslog timestamp anomaly?

I was just looking through my syslog when I spotted this: Jul 7 21:13:34 <Computer-Name> kernel: [14361.093581] CPU1: Package temperature/speed normal Jul 7 21:09:27 <Computer-Name> ...
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1answer
67 views

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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86 views

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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18 views

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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43 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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2answers
177 views

rsyslog server saves logs from remote also in /var/syslog

I have setup my ubuntu server as syslog server to accept all my logs from my router and save them in a seperate mikrotik.log file in the /var/log/ folder. Everything works but i notice that all ...
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3answers
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
14 views

Pm-Powersave file in /var/log is 32 GB

I've been getting messages saying that I've been running out of diskspace on my machine, and my /var/log folder is 33 GB large. Looking closer it all seems to come from one file pm-powersave.log. Is ...
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1answer
50 views

How to save the command line output to a file IN REALTIME

I have made a bash script that is designed to backup my PC every night around 4 o'clock. After the backup has finished, my system goes back into sleep. Currently I am using | tee -a $LOGFILE to log ...
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40 views

cannot log in (Xauthority does not exist)

i have installed ubuntu 14.04 using virtual box, but when installing is finish and after the installing we have to logging in, i try to log in for the first time, and the screen is blank and going ...
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0answers
16 views

Why does Ubuntu send log info into GNU Screen?

I have several Terminal windows open. Inside one of those terminals, I'm running GNU Screen with multiple "tabs". Inside one of those tabs (the one that's active), sometimes logging info appears, e.g. ...
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1answer
297 views

What is USB error -62?

When I plug a USB mouse into a computer, the following error appears in the logs: Mar 24 21:43:03 homer kernel: [ 2674.768039] usb 2-9: new full-speed USB device number 3 using ohci_hcd Mar 24 21:43:...
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23 views

Make last command shows also sftp sessions

last command searches back through the file /var/log/wtmp (or the file designated by the -f flag) and displays a list of all users logged in (and out) since that file was created. On my Ubuntu ...
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55 views

How do I log all access to external USB-Disk?

My external USB-Storage (Silverstone TS431U 4bay HDD Enclosure) won't go into sleep mode. According to the manual, it should shut down after 5 Minutes without activity. Now I'm trying to find out why ...
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2answers
125 views

Logging script output to a file

I wrote a simple script to monitor my gpu clocks and temps. I wanted it to, aside from being visible on the terminal, log its output on an external file. How could I achieve this? My script below, for ...
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17 views

How can I query a rsyslog setting?

I am using rsyslog for program logging and system logging so I have unified log files. I'm having some messages dropping out and I'm not sure why, but I think it may be a configuration option set ...
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0answers
28 views

How do I write IP of the machine in hadoop datanode log file?

I want to write the IP and Hostname or Username of the machine along with all the other information in the hadoop datanode log file. I know I have to do this by modifying the log4j.properties file in ...
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1answer
129 views

How to reduce very verbose output of Realtek rtl8821ae driver in syslog

Using Ubuntu 14.04 with Edimax PCI-E wi-fi card which uses Realtek driver. When using my PCI-e wireless adapter (rtl8821ae) in wireless mode the kernel is writing very verbose information in the ...
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1answer
163 views

Logrotate - keep file for two days

Is there any possibility to configure logrotate so it will keep file for 2 days instead of 1? e.g. this configuration copytruncate daily compress dateext missingok leads to compressing file every ...
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0answers
159 views

Huge kern.log file created in one day

I'm sure this has been answered before but I couldn't seem to find any immediate fixes. Basically, I was setting up a VM in VirtualBox but it kept crashing and I kept changing acceleration options ...
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21 views

Last shutdown halted, how can I track down the culprit process?

I am on Ubuntu 14.04.03 32 bit platform. Last night when I click on shutdown button (it executes sudo poweroff) screen switched to plymouth shutdown animation but it never shut down even though I ...
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1answer
173 views

AppArmor blocks logging set up through iptables for guest account - How to enable?

To log the internet usage (visited URLs) of my local guest account, I asked the question Monitor visited websites of guest account through any browser and after assigning the guest account the fixed ...
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39 views

14.04 start process on boot: system vs user jobs

I have a process that I need to start on boot. Doesn't matter if it's the last thing to start, but I need it up and running when I turn my computer on. I found that using root's crontab and @reboot ...
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140 views

How to stop wifi kill switch from filling syslog?

Just sat down at my wife's computer which was complaining about no space in the root filesystem. Fortunately, Nautilus and Ctrl-Alt-T still worked so I was able to find the offending file - syslog - ...
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2answers
225 views

Monitor visited websites of guest account through any browser

I want to know which websites/URLs are visited by users of my home computer's guest account. Is there a way to log this and save it as nicely formatted list to the disk? I only need date/time and ...
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1answer
107 views

Log error of script to a file along with the date and time

I can use 2> errorLogFile to log error of running script to a file right? my question is how to log the date and time of error along with error? for example: $ cat myScript 2> errorLogFile .......
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19 views

Log Packet Data

Complete Ubuntu noobie here. I have recently installed a virtual instance of Ubuntu server with the intention of setting up an ELK stack. I have the server setup, with elastic search, logstash, and ...
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1answer
27 views

Log all program external call

When I execute a third-party program, is it possible to see (and keep track) all the possible external calls to other programs, with corresponding parameters? Suppose I have a program "foo" which, at ...
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1answer
100 views

rsyslog not logging message from program

I'm trying to write (the beginning) of a daemon on Ubuntu 15.04 and for some reason rsyslog is refusing to output my logged statements - I've tried multiple localities (LOG_LOCAL1, LOG_LOCAL0, ...
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1answer
29 views

Allowing processes that started through ssh to continue and log output in file

So this is a bit of a multi part question, I have a vps that I connect to through ssh to run a few processes on. I would like to be able to start the processes and close my terminal window but still ...
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1answer
91 views

How do I identify which log is incorrectly rotated?

I'm receiving email prompts from two Ubuntu 14.04 servers around unusual logrotate behaviour. I don't have any packages installed which are not installed on other servers which don't exhibit this ...
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1answer
37 views

How can I log terminal output to a file but leave the terminal window active to allow answering of prompts? [duplicate]

I am trying to run a big script that prompts for answers along the way. I want to run it in verbose mode and thus there will be significant output and I'd like to capture it. Therefore I'd like to ...
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103 views

run a process in background and give stdout for it even if terminal is closed

I found some link here(Hide stdout of a process only when it is running in background) about redirecting running process' output but my case(a module logging to stdout) is a bit different. Cause I am ...
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0answers
36 views

Execute fstrim weekly with a user-set crontab [duplicate]

I am currently using Ubuntu 15.04. My Linux experience is limited. I would like to execute fstrim weekly. Ubuntu already has a script set up in /etc/cron.weekly/fstrim, but it does not do exactly ...
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0answers
86 views

What logs are kept about activity in a Guest Session in Ubutnu?

Recently, I learned a lot about the Guest Session especially, how to disable it. An intruder accessed my locked Ubuntu 14.04 laptop while I was away from my desk. I can see where the Guest logged in ...
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2answers
2k views

Where would you find SCP logs?

I can't seem to get SCP logs (on the server) to show up anywhere. I've searched through quite a few pages, including: scp / ssh log on ssh-server http://ubuntuforums.org/showthread.php?t=1789437 ...
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194 views

SFTP / openssh logging with chrooted users

I just tried to follow the steps from this thread: http://ubuntuforums.org/showthread.php?t=2081637 For some reason, it does not work. I tried to follow exactly those steps, but the log file is not ...
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1answer
290 views

tomcat base directory for logging

Not sure if this should be on StackOverflow.. I followed this tutorial to install tomcat8 (with java8) on an ubuntu-12.04 instance. It uses the upstart script to install tomcat8 as as auto start ...
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215 views

Cinnamon on Ubuntu 14.04 - black screen after logging

I use Cinnamon with Ubuntu more than a year, but yesterday new error came: A few seconds after I started Ubuntu and logged in my profile with Cinnamon, it loads just a black screen, and then a logon ...
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1answer
492 views

Ubuntu 15.04 via virtualbox log in fails (using correct password).

New to Linux and Ubuntu and prior to making the permanent switch Ive installed the latest version of VirtualBox onto my windows 7 laptop to explore the OS and come accustom to it. Ive downloaded ...
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1answer
144 views

Record RAM usage during runtime of a Java Application

I want to evaluate how some code transformations change the RAM usage of a Java Application. Is there a possibility to log the average RAM usage or the highest peak of the RAM usage in the shell ...
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1answer
176 views

dovecot with antispam plugin

I am trying to enable antispam plugin for dovecot, but then dovecot stops working: Jun 4 19:31:25 newmail dovecot: imap-login: Login: user=<tomasz_grobelny>, method=PLAIN, rip=127.0.0.1, lip=...
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0answers
355 views

How do I send nginx access and error logs to syslog?

I have rsyslog configured to ship logs to another server. I have been trying to setup nginx and rsyslog to use a socket, like /dev/log, to transfer logs into the local rsyslog and then let it handle ...
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1answer
138 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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1answer
96 views

Is there a ready made logging server compatible with log4cplus?

Looking at the list of packages in Ubuntu, I could not find a package that could be used with log4cplus that would be a logging server. My idea would be to be able to send logs through a server so ...
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2answers
2k 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 ExecStart=/opt/foo/.cabal-...