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CentOS 7 root password reset

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If we have a CentOS 7 or Red Hat Enterprise Linux (RHEL 7) with a selinux in enforced mode, the password resetting procedure need to be modified. From the Grub menu type “e” in order to edit the default menu item. Find the line that starts with “linux16”. At the end of this line append … Read more

Reduce raster effect from old photo

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This is a internal recipe, not a tutorial. Scan at 9600 dpi (to enlarge a small photo) Rotate the photo with 180 degree and scan again. Place the second scan in another layer in Photoshop. Rotate the second layer with 180 degree. Use align layers function with 50% opacity of the top layer. Flatten the … Read more

Windows Server 2008 PDC external time

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Internet time is hidden from control panel. As a PDC, Windows Server 2008 need to be synchronized with external source. You can select the closest NTP server from http://www.pool.ntp.org/en/ Microsoft recommends (quote from technet.microsoft.com): Click Start, and then click Command Prompt. In the Command Prompt window, type the following line, where peers is a comma-separated … Read more

Blocking spambots with SCROLLOUT F1 and fail2ban

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I asume that you have a fuly functional SCROLLOUT F1 instalation and you want to add spambot blocking feature. Ad the following line to /etc/apt/sources list deb http://ftp.debian.org/debian unstable main Then run apt-get update apt-get -t unstable install fail2ban cd /etc/fail2ban cp jail.conf jail.local Edit jail.local [postfix] enabled = true port = smtp,ssmtp filter = … Read more

Low budget High Quality Digital Stereo Sound for Mac OS X Lion

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Introduction: I used to have a 5.1 THX certified Logitech 5300Z sound system. Sound great, but some inconveniences related to analog 5.1 audio systems: extra wiring for rear speakers, only one audio source, huge subwoofer, lack of digital connectivity. I sold it with intention to buy Logitech Z-5500 that has digital inputs. Besides the fact that the last … Read more

How to recover ext4 from GPT partitioned disk

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Hard drive sizes had increased dramatically in last several years, but block device drivers are still outdated. For hard drives more than 1TB currently seems to be an advantage to use GPT instead of legacy MBR partition table. You can see more details at http://en.wikipedia.org/wiki/GUID_Partition_Table . One of the inevitable disadvantage of GPT is the … Read more

Clear DNS cache windows

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Operating systems affected: MicrosoftTM Windows XP, Windows Vista, Windows 7 To clear dns cache: ipconfig /flushdns To restart dnscache service: net stop dnscache net start dnscache You can also do this visually from MMC. Just type services.msc in run/search and use appropriate command in order to restart dnscache service. Benefits: could solve web browsing problems … Read more

Wipe free space on Mac with CCleaner

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The well known Piriform’s  PC Optimization software CCleaner it is now available on Mac for Leopard, Snow Leopard and Lion. It this post I will show You how to use “Wipe Free Space” feature of CCleaner. But why should I wipe the free space on a hard disk? When you create any sort of file … Read more

Free Online Photo and Image Editor – IMAGEBOT

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We are often use online editors, like webmail as an email editor, Google Docs as Office suite replacement for simple Word and Excel documents. Even photo manipulation web tools are popular. Recently I found out that the first free vector art library OpenClipart is using a online web editor to edit their .svg files. Even … Read more