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Kolab – Move personal data to the private server
Almost four months ago I mentioned about moving personal data to the private server. Now it is reality as I have already started to move and organize personal data using Kolab groupware server. To...
View ArticleKolab and national characters in the mail subject
I am using mainly Polish language so it is obvious that fairly quickly I encountered a problem with national characters in the subject line. Problem is not fixed in Debian packages (using Debian Wheezy...
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WordPress and Login Security Solution – SQL query
Login Security Solution is very useful plugin if you want to slow down brute force attacks, enforce password policies and timeout inactive sessions. It is also worth mentioning that it records the IP...
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Kolab – High CPU usage after adding a few aliases
Yesterday I added a few mail aliases using Kolab admin interface and went to sleep. Today I noticed high CPU usage and quickly found that there is a small problem with pykolab 0.5.11-5 package. This...
View ArticleKolab - How to integrate Tiny Tiny RSS
Brief description of the Kolab Groupware integration with Tiny Tiny RSS.
View ArticleKolab - How to integrate Dokuwiki
Brief description of the Kolab Groupware integration with Dokuwiki.
View ArticleDebian - How to hold specific package
There are at least couple ways to hold specific package and prevent it from being updated as you can use apt, dpkg, aptitude, dselect, apt preferences, but only the last one is effective in every case.
View ArticleOpen Source web-based RSS readers
I am using Tiny Tiny RSS every day to read and organize news feeds as it is my personal favourite, but it does not mean that it is the only available choice, so I will briefly present four different...
View ArticleHow to list local displays
I was always curious about how to list local displays as it is quite interesting issue. Solution is not immediately apparent, but easy enough to spot after a while as it does not require anything more...
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How to create browser sandbox
I am using Firefox web browser most of the time, but you need to know that I have drawn a clear line between daily browsing and strictly private usage by using browser sandbox. I will shortly describe...
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VirtualBox - How to control virtual machine using shell
At the beginning of the last year, I wrote about VirtualBox image conversion, so today I will continue this topic further, and describe how to control virtual machine using command line. How to list...
View ArticleDebian - How to display available updates
It is very easy to display available updates using application with a graphical user interface (check out apper for example) but not so obvious to do it by using shell commands only. I will shed some...
View ArticleHow to perform automated backup using rsync over ssh
Today I will describe how to use rsync over ssh using four simple examples as it is very convinient way to perform secure and automated backup. Use case #1I will start with the simplest possible...
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Web-based VirtualBox front-end
Recently, completely by accident I found phpVirtualBox a web-based VirtualBox front-end to VirtualBox written in PHP. From my point of view it is very useful project as it provides easy way manage...
View ArticleHow to setup point-to-point OpenVPN tunnel
Static key configuration is the easiest and shortest way to set up OpenVPN tunnel.It is especially useful when you need to securely connect two distinct locations, but due to its simplicity I am using...
View ArticleSource code wants to be free
Today I released source code for couple of interesting things you can find here on this blog.kolab-octo-owncloudKolab and Owncloud 5 integration (with SSO)kolab-octo-dokuwikiKolab and Dokuwiki...
View ArticleHow to check last mount time of the ext2/ext3/ext4 filesystem
Couple days ago I was asked about how to check last mount time of the ext2/ext3/ext4 filesystem. Solution is very simple as it does not require anything more then tune2fs utility. $ sudo tune2fs -l...
View ArticleNexus 7 - Android 4.3 - bootloader problem
Recently I decided to upgrade my Nexus 7 to the Android 4.3 Jelly Bean, but quickly encountered InvalidState error when tried to update bootloader.I downloaded Android 4.3 Jelly Beannakasi - JWR66Y...
View ArticleHow to read the kernel's start-up parameters
Simply dive into proc filesystem and read /proc/cmdline file to determine the kernel's start-up parameters. $ cat /proc/cmdline BOOT_IMAGE=/vmlinuz-3.2.0-4-amd64 root=/dev/mapper/enc-root ro quiet
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How to disable automatic mounting of the removable storage devices on Crunchbang
Today I went almost crazy because of automatic mounting and opening of the removable storage devices, fortunately this behavior can be quickly changed by the use of thunar-volman-settings...
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