Want to win a PS4? Go Premium and enter to win our High-Tech Treats giveaway. Enter to Win


How to check sys log/events log in linux

Posted on 2006-11-01
Medium Priority
Last Modified: 2012-08-13
Does any body know how to check/view logs in Linux (Redhat FC)? Do you have login as root to view the logs?

Thanks, Leo
Question by:msaalim
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 3
  • 2
  • 2
  • +1
LVL 14

Accepted Solution

pablouruguay earned 336 total points
ID: 17849198
not. you can view the logs with any user.

the logs are in

LVL 26

Expert Comment

ID: 17851426
you SHOULD have to be root to look at the system logs. Looking in my /var/logs directory shows me mostly 600 modded files. The file you probably want is /var/log/messages

Assisted Solution

_iskywalker_ earned 332 total points
ID: 17862521
you can see as user although also dmesg, these are the kernel messages (The really system). in /var/log/messages are also
messages from daemons, like sshd and login daemon, and in /var/log/Xorg.0.log are the X (gui) messages.
Free Backup Tool for VMware and Hyper-V

Restore full virtual machine or individual guest files from 19 common file systems directly from the backup file. Schedule VM backups with PowerShell scripts. Set desired time, lean back and let the script to notify you via email upon completion.  


Author Comment

ID: 17965588
I found the logs in /var/log folder. Some files have extensions, other don't. Here are some of the files I see in this folder. We have firewall and IDP, the logs are directed to this system. On firewall and IDP, only IP is configured as syslog server. How do I know which ones are from firewall and which one from IDP. Also how to view them. Some files below seems to be huge. Is .gz zip file extension? Is vi editor only way to view them or any other options? I am new to linux. Your help will be appreciated.

extlog   3005821604
extlog.1.gz   271880489
exlog.2.gz    238664375
messages   3005836775
messages.1.gz   271895532
messages.2.gz   238682314

Thanks, Leo
LVL 14

Expert Comment

ID: 17965937
extlog is the recent log for the firewall and messages is the recent log for your machine.
the .1.gz and .2.gz are the result of logrotate script that package any log every week.

vi is an option to see it, you can use too emacs or if you have X installed you can use another texteditor like gedit or kedit
LVL 26

Assisted Solution

jar3817 earned 332 total points
ID: 17966025
the .gz extension means the file is compressed using gzip. Uncompress the file doing:

gunzip filename.gz

That will reinflate the file and strip the .gz extension. After that you can use vi to look at the file. You can also leave it compressed and use zcat to look at it:

zcat messages.1.gz |more

That would show the contents of the file page by page (hit space to advace to the next page)

Author Comment

ID: 18109788
My uncompressed file is about 3.4 gig, and opening it in vi editor would take a lot of processing. I tried to move the file to windows, but when I unzipped it with winzip, and tried to open it in notepad and word, it would just show a one line garbage. Do you know how can I open it in readable form.

LVL 14

Expert Comment

ID: 18133430
with the split command you can create a files more redeables than 3 gb. for example 300 Mb


Featured Post

Technology Partners: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

I have seen several blogs and forum entries elsewhere state that because NTFS volumes do not support linux ownership or permissions, they cannot be used for anonymous ftp upload through the vsftpd program.   IT can be done and here's how to get i…
Note: for this to work properly you need to use a Cross-Over network cable. 1. Connect both servers S1 and S2 on the second network slots respectively. Note that you can use the 1st slots but usually these would be occupied by the Service Provide…
If you're a developer or IT admin, you’re probably tasked with managing multiple websites, servers, applications, and levels of security on a daily basis. While this can be extremely time consuming, it can also be frustrating when systems aren't wor…
Want to learn how to record your desktop screen without having to use an outside camera. Click on this video and learn how to use the cool google extension called "Screencastify"! Step 1: Open a new google tab Step 2: Go to the left hand upper corn…

636 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question