Just two words Meltdown and Spectre

Here comes next big vulnerability Meltdown and Spectre or CVE-2017-5753/CVE-2017-5715 and CVE-2017-5754 discovered by Google project Zero team.

Patches are available for some operating systems and are coming reallt soon for others. In essence bug in some CPUs allows attacker to read protected kernel memory.

Mirrors to be removed

Due to obsoleteness of several repos their mirrors will be removed from mirrors.syadminguide.net on March 31 2017.

Affected repos are: CentAlt, Shorewall, Misc

Tagged with: , ,

Installing FreeDOS 1.2 – Video

Even currently DOS is not widely used there are still need for an environment to run DOS programs.

Here is a video on how to install it in VirtualBox.

Tagged with: , ,

Mirror service status 20161012

mirror.sysadminguide.net is offline. online

My test server that hosted the web site has issues and recovery is undergoing.

Status updates could be found on this post.

Update: Mirror service is up

Tagged with: ,

UBCD 3.5.6 is released

UBCD V5.3.6 is now available for download. A few apps have been updated to their latest versions. Also, the F-Prot database paths have changed and the corresponding changes have been made to the fprot.sh script.

Important: If you have downloaded the iso before Sep 30 17:00 UTC, please check your checksum. It should be: [md5sum: 34694f7981908b396149af6b535704b2] (Thank you, Eric for the notification)

Tagged with:

ProFTPD updated to version 1.3.5b

Following announcement of ProFTPD version 1.3.5b CentAlt rpm has been updated.

Tagged with: , ,

How to add simple bell command to bash

Often when running commands in Linux terminal I had to multitask and switch to another terminal.

That is good, but how to get notification that first task is completed?

We all get bell notification from the terminal.
So why not use it?

In Linux there is a tool called beep, but it is not by default in many distributions.

For the simple notification I found not as elegant, but simple solution.
If you send ASCII BEL (\007) to terminal it will beep.

So to “create” bell command just add to .bashrc

alias bell="echo -ne '\007'"

and reload it

source ~/.bashrc

Then you can use bell command to produce bell sound.
For example:

find / -name test.txt&&bell
Tagged with: , , ,

Linux screen command – scroll inside screen

Linux screen command is great tool if you need long running command to execute even you are closing the session.

In case you want to see scrollback above your current screen standard tools on your terminal do not apply.
Instead you can use copy function of screen.

To do so:
Press “ctl+a” then “ESC” key.
After that you are able to navigate using arrow keys.

Source: https://www.gnu.org/software/screen/manual/

Tagged with: , ,

Windows 10 XAMPP cannot start httpd on port 80

Recently I’ve completed the upgrade of my desktop from Windows 7 to Windows 10.

In general process was without major problems if we exclude extremely long wait and need to reboot the computer once more to make it work properly.

Today I’ve decided to start XAMPP to test few scripts.
Unfortunately I was greeted with following message:

8:58:37 PM  [Apache] 	Problem detected!
8:58:37 PM  [Apache] 	Port 80 in use by "Unable to open process" with PID 4!
8:58:37 PM  [Apache] 	Apache WILL NOT start without the configured ports free!
8:58:37 PM  [Apache] 	You need to uninstall/disable/reconfigure the blocking application
8:58:37 PM  [Apache] 	or reconfigure Apache and the Control Panel to listen on a different port

Quick check showed that indeed port 80 is used.


PID 4 is usually associated with services.
Looking at services and browsing down showed that Word Wide Web Publishing Service is started by default with windows 10 upgrade.

Word Wide Web Publishing Service

After stopping Word Wide Web Publishing Service I was able to start Apache on port 80.

9:03:36 PM  [Apache] 	Attempting to start Apache app...
9:03:36 PM  [Apache] 	Status change detected: running
Tagged with: , ,

Windows 10 upgrade is coming

Today I was surprised by seeing new icon in my taksbar:

With caption: Get Windows 10

After opening it I was presented with following wizard:

Unfortunately for now it is just to reserve the copy.

Microsoft via windows.com states following:

“Get a free upgrade to Windows 10 when it’s available starting July 29, 2015. Limited time offer!*”

And this is the * Text

*Windows Offer Details

Yes, free! This upgrade offer is for a full version of Windows 10, not a trial. 3GB download required; standard data rates apply. To take advantage of this free offer, you must upgrade to Windows 10 within one year of availability. Once you upgrade, you have Windows 10 for free on that device.

Our lawyers made us say this:

Windows 10 Upgrade Offer is valid for qualified Windows 7 and Windows 8.1 devices, including devices you already own. Some hardware/software requirements apply and feature availability may vary by device and market. The availability of Windows 10 upgrade for Windows Phone 8.1 devices may vary by OEM, mobile operator or carrier. Devices must be connected to the internet and have Windows Update enabled. Windows 7 SP1 and Windows 8.1 Update required. Some editions are excluded: Windows 7 Enterprise, Windows 8/8.1 Enterprise, and Windows RT/RT 8.1. Active Software Assurance customers in volume licensing have the benefit to upgrade to Windows 10 enterprise offerings outside of this offer. To check for compatibility and other important installation information, visit your device manufacturer’s website and the Windows 10 Specifications page. Additional requirements may apply over time for updates. Security and features are kept automatically up-to-date which is always enabled.

Tagged with: