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DevOps Anti-Patterns

DevOps Anti-Patterns

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Identifying Web Performance bottlenecks

Tips how to identify bottlenecks of web sites

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Ian Murdock Legacy

Short text about Ian Murdock legacy

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Choosing a software name

tiny dialog how to choose a software name

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Building Debian images by jigdo

A friend asked me how to got a Debian Old Image, she wanted to download Debian Squeeze DVD image. Unfortunately, it’s impossible to download by Debian-CD mirror because Squeeze isn’t more maintainer. So, it’s possible to get a Image by Debian-CD primary server but it’s locate in Sweden. Nothing problem, right? Well, She lives in Brazil and the download time is a little bit more than 8 hours. A good tool to “download” a Debian image is the Jigdo. Read On →

Purge Debian packages marked with rc status

Sometimes when I find a package that is installed on my computer (Debian), I found status rc but I never found a explanation in official documentation. For now, my OS has the following packages marked rc status: fike@klatoon:~$ dpkg -l | grep ^[rc] rc libaacplus2:i386 2.0.2-dmo1 i386 AAC+ encoding library - runtime files rc libavcodec55:i386 10:2.3.3-dmo3 i386 Library to encode decode multimedia streams - runtime files rc libavresample1:i386 10:2.3.3-dmo3 i386 FFmpeg audio conversion library rc libavutil52:i386 10:2. Read On →

Using httpie instead curl

I love curl. It’s awesome to test many services like HTTP/HTTPS, FTP, IMAP, etc. But, curl sometimes is hard to use for my customers. So, I have recommended that they use the httpie. In my main job, I use curl/httpie to see HTTP headers and cache problems. Then, when I need to display evidence for my customers, I prefer to use httpie. A simple example using only HTTP headers. fike@klatoon:~/d$ curl -I https://fernandoike. Read On →

Using vagrant with bridge network

I needed to use vagrant with bridge network in a project and the official documentation isn’t clear about it. Well, it’s simple, you should change the “Vagrantfile” in ”config.vm.network” parameter. E.g. using bridge on wlan0. config.vm.network :public_network, :bridge => 'wlan0'

Adding subtitles to video using shell

The libav is a ffmpeg fork and it has the most ffmpeg features. As libav is an official Debian package, it will be used like a tool to add subtitles but it works like a ffmpeg. To add a subtitle to video, it’s needed to use avconv that is included in libav-tools package. So, let’s install it. $sudo aptitude install libav-tools So, it’s simple to add subtitles to a video. Read On →

Debian wheezy released

On May 4th, the new stable 7.0 version of Debian (code name Wheezy) was released. Why Wheezy? Wheezy is the name of a singing toy penguin who appears in Toy Story. Traditionally, Debian uses codenames. The next stable version of Debian will be named Jessie. Jessie? Yes, she’s the Cowgirl (?) in Toy Story. Oh … I almost forgot, I recommend reading the release notes as they provide information on the latest version. Read On →