Review: The perfect duo – powerbank and solar charger

Do you live in a sunny country? Want to use the sun’s energy to charge your mobile devices? This duo of a solar charger and a USB powerbank will let you harvest the sun and charge your devices whenever you … Continue reading

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Harden SSH server settings

Many Linux Administrators use ssh on a daily basis. Many of the ssh servers are in their default configuration. Not changing the default configuration puts the security of the server at risk. That is why it is important to follow a few … Continue reading

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Manage photo EXIF data via terminal

Additional to the GUI tools that are available to manage EXIF information in photos, there are also command line tools that can do this as well. Command line utilities allow you to script the processing of photos. The following shows … Continue reading

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Get vim to paste content without modification

When content is pasted into vim, it tries to automatically detect and re-indent the content. This works most of the time but sometimes it does not, and that can be annoying, but vim would not be so popular if there wasn’t … Continue reading

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Change Date and Time format for LinuxMint panel applet

Modern Linux distributions like LinuxMint provide a nice GUI which is highly configurable. There are so many options and possibilities that most users new to it cannot find where things are configured. Finding the right options means taking some time to … Continue reading

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Manage SSH-keys with the SSH-agent

Many webservices generate ssh keys to access their service. With the amount of services the number of SSH keys grows. To avoid dealing with the keys in the command line and the ssh_config(5), you can simply add the ssh-key to the … Continue reading

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Create a luks encrypted partition on Linux Mint

Encryption is not only for someone who has something to hide. There are simple concerns like a lost or stolen laptop that justify a full disk encryption. There are only a few steps necessary to create a encrypted partition. In … Continue reading

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Dimension rrdtool databases with years worth of values

To create an rrd datbase file needs a certain amount of understanding of what you monitor, and for how long the data needs to be kept, and of course, storage space is also a consideration when creating a new rrd … Continue reading

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Configuring vim for dark terminal windows

On CentOS, vim is installed with a default configuration. These defaults might be right for some users but not for everyone. I will describe the two settings I personally find most annoying for my setup. One of the assumtions in the … Continue reading

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Recompress git repository

Git repositories are getting bigger and bigger. To reduce the disk space used by a repository, git provides some housekeeping functionality. Compared to other version control systems, git stores the complete history in each cloned repository if not told otherwise. This can … Continue reading

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