All Questions
235
questions
103
votes
3
answers
118k
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/...
- 7,213
69
votes
8
answers
52k
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?
- 793
62
votes
6
answers
10k
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 ...
- 1,211
60
votes
3
answers
72k
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 ...
- 973
42
votes
4
answers
221k
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 -...
- 2,209
39
votes
1
answer
3k
views
Accidentally deleted log file of running process `python something.py 2>&1 | tee .log`. Is there a way to still save the output on the tmux-pane?
Accidentally deleted log file of running process python something.py 2>&1 | tee .log. The script is running in a tmux pane on zsh. The process is still running but not logging. The output ...
- 516
39
votes
7
answers
72k
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?
- 8,500
30
votes
4
answers
37k
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.
- 1,030
24
votes
3
answers
48k
views
Linux: How to monitor incoming pings
Can I somehow monitor incoming pings on a Linux machine? netcat doesn't seem to support that.
- 1,279
24
votes
5
answers
31k
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 ...
- 3,289
19
votes
4
answers
3k
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 ...
- 3,039
17
votes
7
answers
20k
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 ...
- 362
17
votes
3
answers
64k
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 ...
- 637
16
votes
1
answer
22k
views
How to follow systemd unit log?
I have a running systemd unit and I want to follow it's log.
I know I can show unit's log by using:
journalctl -u my_unit.service
But that only prints current logs without following them.
I know I ...
- 573
14
votes
7
answers
28k
views
Piping tail -f into awk
I am trying to pipe tail -f into awk to monitor a logfile in realtime, but according to examples, there should be not problem but I can't get it to work.
here is the command I'm running
tail -f ...
- 241
14
votes
1
answer
73k
views
How to check Ubuntu crash log in last session?
My headless Ubuntu (11.10) crashed. When I plug in keyboard and monitor, I see an non-interactive cursor (no blink) on a black screen. SSh, telnet don't work from other machines. Ping works.
I have ...
- 325
13
votes
5
answers
24k
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 ...
- 801
12
votes
4
answers
5k
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 ...
- 3,107
12
votes
4
answers
24k
views
logrotate unable to rotate logs, getting "No such file error"
logrotate is unable to rotate my logs. I have checked the file permissions, they are fine.
I have even tried by putting "su root root" in the configuration file, still I am facing the same issue.
...
- 1,582
11
votes
1
answer
10k
views
How to stop journalctl showing audit logs and only keep it in a file?
I would like to have all auditd logs only in it's own log file and keep my journalctl view less polluted with events that most of the time, are generated by my own actions (single-user/personal ...
- 358
9
votes
2
answers
55k
views
How to change log level in /var/log/messages?
I'm running SUSE Linux Enterprise Server 10, SP2 (SLES10 SP2), and am seeing a large number of what support calls cosmetic errors being logged to /var/log/messages.
Does anyone know of a way to ...
Kam
8
votes
5
answers
17k
views
Writing a CPU/RAM usage log over a period of time to file on CentOS
I'm looking for an application or line of code that would let me observe a process, save the info in a number of variables, then put the gathered info on a file.
I've been trying with variations of ...
- 218
8
votes
4
answers
29k
views
Redirecting command output in docker
I want to do some simple logging for my server which is a small Flask app running in a Docker container.
Here is the Dockerfile
# Dockerfile
FROM dreen/flask
MAINTAINER dreen
WORKDIR /srv
# Get ...
- 456
8
votes
2
answers
19k
views
Where to look when the system crashes or something else horrible goes down?
My Linux Mint workstation is acting funky, it appears to be logging me out randomly, though I'm guessing what's really happening is that the X desktop is crashing. Maybe.
How do I troubleshoot this? ...
- 2,395
7
votes
3
answers
11k
views
logging RAM memory high-water mark of a Linux process
I would like to log the RAM memory high-water mark of a Linux process (kernel 3.2.0-36) by the time the process finishes. I am calling the process inside a Perl script. Something like:
my $cmd = "...
- 4,457
7
votes
3
answers
15k
views
What does "Still Running" mean (Linux)?
$ last -x reboot
reboot system boot 4.4.0-46-generic Mon Nov 14 12:15 still running
What does the "still running" mean at the end of the log entry?
Did the server reboot?
Is it going try later?
Is ...
- 71
6
votes
2
answers
20k
views
How can I view live logs on a Linux server (Ubuntu)
How can I view a live log on a Linux server, so that I can see new log entries instantly as they are being added?
- 4,419
6
votes
2
answers
5k
views
Specify top's screen width in batch mode
I am logging the output of: top -b -n1 -c so I can keep track of which processes are using how much memory and CPU each minute. When top shows the full command line (-c), the command line text gets ...
- 162
6
votes
2
answers
2k
views
Where to find Ubuntu One logs
Ubuntu one does not synchronize files since I upgraded from 9.10 to 10.04. The preferences panel keeps showing "Synchronization in progress...", but files are not downloaded from the repository. It ...
- 245
6
votes
1
answer
21k
views
Journalctl shows logs from about last hour only
I have a problem with journalctl logs, which doesn't show me logs older than about one hour.
First log entry is from about one hour ago, instead of 2 days as requested.
$ date -u
Wed May 13 08:59:21 ...
- 175