The act of recording actions, requests, and other meaningful data in a computer. Often used for troubleshooting kernels, servers, etc.

learn more… | top users | synonyms (2)

73
votes
6answers
143k views

Why is CBS.log file size 20 GB

Two days ago I had a full C: drive, after which I deleted 8 GB of data. The next day the hard drive was full again, so I continued with deleting another 5 GB, and once again the next day the disk was ...
55
votes
6answers
3k views

Alternative for “tail -f” that follows filename

I have some logs being generated using a timed rotating file logger. This logs to a file called tool.log, and at midnight, moves this to tool.log.<date> and starts a new tool.log. I have a tail ...
47
votes
1answer
34k views

logrotate configuration file syntax - multiple wildcard entries possible?

Since the man page doesn't answer my question and I don't want to force a rotation cycle, I decided to ask the question here. The man page for logrotate gives the following example: "/var/log/...
41
votes
4answers
14k views

How can I log all process launches in Linux

I would like to get a log of all processes that are launched with the time that they were launched and the arguments they were launched with. Is this possible in Linux?
37
votes
6answers
32k views

Log viewer on Windows [closed]

I'm a developer, and I generate big log files. I've tried several log viewer applications (free or not), so far mtail I like the most. But, it lacks features. I would like from my log viewer to: ...
23
votes
4answers
85k views

Where Linux places the messages of boot?

I want to find place to where Linux writes all boot messages. You know: facility one [STARTED] facility two [STARTED] facility three [FAILED] I searched with find . -print0 | xargs -0 grep ...
22
votes
3answers
99k views

Viewing the full Skype chat history

I have Skype 2.8 on Mac OS X 10.5.8. Under the the chat menu is an option called "Recent Chats". This allows me to see logs of recent chats, but not of older ones. I know the older ones are ...
22
votes
3answers
14k views

Linux - some way to keep a live-updating log file open in terminal?

This must've been done before: I want to keep a log file open in terminal so I can monitor updates to it as they occur. My searches are coming up with everything but this situation... I must be ...
20
votes
7answers
122k views

How to see who is using my WiFi

I have a WiFi router at home and would like to know if there is any way to know who is connected to my WiFi network and using it. My WiFi network is password protected but still there could be a ...
20
votes
3answers
3k views

Is there an exhaustive list of what Windows logs or can log?

I know that there is the event log, but that's not where it stops. There are logs for MSI executables, device logs, setup and installation, performance logs, and so on. It's probably quite a long list;...
18
votes
5answers
20k views

Writing “tail -f” output to another file

As a continuation from my last post where I have used grep & tail -f to find occurences of "rare" events. I would like to record this in another file. I've tried turning tail -f log.txt | ...
18
votes
4answers
1k views

Linux command line log viewer which allows auto tail AND searching?

I use tail -f in my Linux shell, to view log files, as I like how it auto-updates with the incoming text: I like to see the new stuff come scrolling in. However, I also like the search functionality ...
18
votes
3answers
4k views

How can I suppress chrome-extension:// output from Web Inspector's console log?

I don't wish to disable my extensions – after all they're there for development purposes – but I want to disable their output from the console in Web Inspector. Is there a way to do this? N.B. a very ...
17
votes
3answers
21k views

How do I log startup and shut-down times in Windows 7?

I'd like to log the times when my computer starts up and shuts down. I don't need any diagnostic info or anything, just a simple note of the date and time, e.g. something like: 2011/04/29 08:17:34 AM ...
16
votes
3answers
29k views

Remove first N lines from an active log file

Is there a way to remove the first N lines from a log that is being actively appended by an application?
16
votes
2answers
21k views

How do erase the contents of a error.log file but keep the file intact

I want to erase the contents of the file error.log (nginx error log file), but I don't want to actually delete the file. is this possible? running ubuntu
14
votes
3answers
33k views

Where is the log file generated by a verbose start-up in OS X Lion?

After starting up my machine in verbose mode (cmd + v at start-up) I want to view the generated log messages, to debug an error I'm receiving (the error). The error is only displayed on the screen ...
13
votes
2answers
2k views

What does it mean when there are many POST requests to /wp-login.php in Apache logs?

The messages are directed toward the WordPress site on my server. These are coming from the access_log, and I don't know if this should worry me or not. There are well over a hundred lines of the ...
13
votes
4answers
3k views

Linux command line utility for watching log files live?

What's a good linux command line utility for watching a log file live? It's probably obvious but I totally forgot it.
13
votes
3answers
49k views

Is there a Windows 7 uninstall log that shows who uninstalled what?

Is it possible to know who uninstalled a specific application from Windows 7 event logs?
13
votes
5answers
14k views

How do I log file system read/writes by filename in Linux?

I'm looking for a simple method that will log file system operations. It should display the name of the file being accessed or modified. I'm familiar with powertop, and it appears this works to an ...
13
votes
2answers
59k views

What folder are installation logs in?

If an installer stores a log of the installation process, where would I find that log? If there is an installer that does not log the installation process, how can I make it do so?
13
votes
3answers
36k views

How to log activity on my computer?

I have a simple question, I have a computer at home, and I'm thinking someone from the family is doing things to it while I'm asleep (playing games, downloading stuff). Now usually, I won't mind, but ...
12
votes
2answers
18k views

User login “log” on Mac OS X

Does Mac OS record user logins/logouts? I'm in a situation where I need to show that a certain user was logged in at a certain time (long story) less than four weeks ago. Is this recorded at the Mac ...
12
votes
2answers
5k views

How to log processes throughout workday?

Basically, I want to track which processes are running and their cpu % throughout the day to pinpoint random freezing and slowness. I would like to go in to a text file and see a log of the previous ...
12
votes
3answers
65k views

How can I use Event Viewer to confirm login times filtered by User?

I'm required to log my start and finish times at work. Occasionally I forget to do this and had a bright idea that checking the Security events log would allow me to retrospectively ascertain my times....
10
votes
3answers
18k views

How do you enable syslogd to accept incoming connections on Snow Leopard from remote loggers?

How do I get syslogd to accept incoming connections from remote hosts on Snow Leopard? I'd like to centralize logging such that various devices and systems send logs to Snow Leopard's syslogd, ...
10
votes
5answers
16k views

Text / log editor with auto-refresh support [closed]

I'm looking for a text editor / log manager of some kind that will automatically refresh a file's contents when it changes. I have a single target log file (e.g. current.log) that is overwritten ...
10
votes
3answers
423 views

Linux user account 'nagent' deleted and re-added in secure log

The following lines appear in my CentOS secure log file: Oct 27 21:10:59 servr userdel[7270]: delete user 'nagent' Oct 27 21:10:59 servr userdel[7270]: removed group 'nagent' owned by 'nagent' Oct 27 ...
9
votes
4answers
3k views

Walk me through the Linux log files (please)

I just tried loading a 2MB file in gedit and it silently died on me. I was wondering if anything might appear in a log file that might help me diagnose this: I checked syslog and found out it ...
9
votes
3answers
9k views

Linux: How to monitor incoming pings

Can I somehow monitor incoming pings on a Linux machine? netcat doesn't seem to support that.
9
votes
2answers
16k views

Rsyslog outputting to custom log file

Can anyone tell me what I did wrong here? Here is the ultimate question: Why when I use the logger command can I not get it to output to a custom log file in /var/log? In my script: logger -i -t ...
8
votes
3answers
28k views

Logging individual application network usage in Windows 7 [closed]

There are many answers here detailing programs that will monitor and log internet usage for a pc, but I need that usage to be logged and broken down, detailing which applications consumed that data. ...
8
votes
5answers
30k views

iPhone log reader

I went to the apple store today to discuss a problem with my iPhone battery, and they plugged it into one of their macs and used an application that interpreted the logs stored on my phone. So, my ...
8
votes
2answers
16k views

Can't cd into my own directory?

On an EC2 instance I have changed Apache's log location to a different directory than the default. This is so that I can hold the logs on a (non-boot, only data) EBS. However, I can't cd into the ...
8
votes
6answers
52k views

Where are Blue Screen of Death events logged on Windows XP and how can I view the history of them?

I got a Blue Screen Of Death on reboot. Where are events like this logged on Windows XP and how can I view the history of the BSODs?
8
votes
5answers
5k views

Tips for using vim as a log viewer

As a log viewer, which of vim's features are convenient? less -F is quite good. But I believe vim could be better if we knew its hidden features. * or # v//d g//d etc.. PS. I don't use ...
8
votes
4answers
11k views

How do I log all UNIX shell commands submitted by all users?

Is there an elegant way to log every command submitted in all shells on a machine? This is in the context of an infrequently-used Ubuntu server, of which I am the only human user. (There are several ...
8
votes
2answers
21k views

How to redirect output to a text file and the console (cmd) window at the same time?

How can I redirect output to a text file and the console (cmd) window at the same time?
8
votes
2answers
24k views

Is it safe to delete the Windows logs folder?

Is it safe to delete the contents of the following Windows logs folder: C:\Windows\Logs (OS: Windows Vista) Directory of c:\Windows\Logs 10-02-2009 21:23 <DIR> . 10-02-2009 21:...
8
votes
3answers
4k views

Police found & returned my stolen laptop reformatted by thief. Can installation logs help locate the thief?

Three weeks ago my laptop was stolen from campus. I immediately reported it to police and on manufacturer's website. A couple of days ago a man called the manufacturer and said he bought a second-hand ...
7
votes
7answers
2k views

Am I secure from network monitoring software if HTTPS is used?

I will be logging into my bank account and my personal email accounts at work. Its not banned at work, but I just don't want them to save/log a copy of whatever I do with these services. Especially my ...
7
votes
1answer
18k views

Windows 7 tool to capture keyboard scan codes [closed]

To test a theory for another question I have open, I need a tool that will capture, and display all the scancodes being received by Windows. I need to see if Windows is receiving some kind of signal ...
7
votes
6answers
4k views

Logging lock-screen events

Problem See the exact date & time a user locks and unlocks his work station - running Fedora 18. Question Is there any way to log an event of a user entering and exiting "lock-screen" on fedora ...
7
votes
3answers
17k views

Does Windows log programs that have been run/called?

In Windows, is there a log that records what programs were run/called? While browsing the internet, viewing a static page with no ads, mouse clicks, keypresses, or miscellaneous plugins/addons/...
7
votes
1answer
3k views

tail -f equivalent for an URL

I want to monitor the log file of my application which however doesn't work locally but on a SaaS platform and is exposed over HTTP and WebDAV. So, an equivalent of tail -f that works for URLs would ...
7
votes
1answer
23k views

Where to find log messages in tomcat7 installed on Amazon EC2?

I have installed Tomcat 7 on an Amazon EC2 running Amazon Linux. I have installed a WAR file on tomcat and I am using java.util.logging for logging messages in my code. Now how to access those log ...
7
votes
2answers
33k views

Where does Outlook 2010 logging write to?

I have enabled logging in Outlook 2010 Options > Advanced > Enable troubleshooting logging But i dont know where these logs go. Is the event log or some location on the file system
7
votes
3answers
3k views

Fetching e-mails into Redmine via IMAP

I'm trying to fetch e-mails into Redmine via IMAP. The e-mails I'm generating look like this: FooBar Ltd 123456 http://example.com/Foobar-Ltd-123456.html Project: backend Tracker: Dataerror ...
7
votes
1answer
1k views

Does Power-Management Affect a Hard-Drive’s SMART Statistics?

Among the various fields in a hard-drive’s SMART statistics, a few are flagged as “life-critical”, that is, those values determine the primary health of the drive and how long it may have left before ...