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With the new Linux 4.0 kernel, you'll need to reboot Linux less often than ever. Uz nikdy viac reboot :)

Brutalna stranka obsahujuca kopec infogragik, linkov, toolov, slideov ohladom performance monitoring a tuning na Linuxe

Ever since the announcement of the Raspberry Pi, sites all across the Internet have offered lots of interesting and challenging uses for this exciting device. Although all of those ideas are great, the most obvious and perhaps least glamorous use for the Raspberry Pi (RPi) is creating your perfect home server.

Linux servers displayed a notable tendency to misbehave during the leap second event at the end of the day on June 30. The problem often presented itself as abrupt and sustained load spikes on the affected machines....a look at what happened shines an interesting light on the trickiness of dealing with time in software systems.

skype-poll-fix - Reduce Skype CPU load on Linux and Mac OS - ak vam je kazdy kusok cpu timeu dobry, fix skutocne funguje

Testing distributed systems under hard failures like network partitions and instance termination is critical, but it's also important we test them under less catastrophic conditions because this is what they most often experience. Comcast is a tool designed to simulate common network problems like latency, bandwidth restrictions, and dropped/reordered/corrupted packets. It works by wrapping up some system tools in a portable(ish) way. On BSD-derived systems such as OSX, we use tools like ipfw and pfctl to inject failure. On Linux, we use iptables and tc. Comcast is merely a thin wrapper around these controls.

paradny writeup use caseov, kedy je vhodne pouzit sqlite DB

Dobry clanok s kompletnym zoznamom pred-definovanych makier na roznych platformach.

pekny postup ako ziskat kontrolu nad linuxom ktory bezi na wifi sd karte (cez webserver ktory bezi na sd karte)

Rails engine - moznost pouzit conzolu v prehliadaci... (Tato verzia je pre Rails 4, existuje vsak aj projekt pre Rails3.2)

I've written server-side applications for a decade now, and monitoring the components of your application is critical but painful. What monitors the CPU and RAM usage of your custom daemons? What monitors Redis, MySQL, memcached and the other parts of your system to ensure they are all behaving normally? What if I told you you could do all that and set it up in less than 5 minutes?

+ part 2 http://erenyagdiran.github.io/I-was-just-asked-to-crack-a-program-Part-2/ zaujimavy kratky clanok o crackovani neznameho programu.

I prefer to write happy posts...I really do. But tonight I'm completely defeated by the JDK's implementation of subprocess launching, and I need to tell the world why. JRuby has always strived to mimic MRI's behavior as much as possible, which in many cases has meant we need to route around the JDK to get at true POSIX APIs and behaviors.

commity Kernighana, Ritchieho, Bournea .. The goal of this project is to create a git repository representing the Unix source code history, starting from the 1970s and ending in the modern time. To fulfill this goal the project brings data from early snapshots, repositories, and primary research. The project aims to put in the repository as much metadata as possible, allowing the automated analysis of Unix history. The following table illustrates the type of material that can be gathered and integrated into the repository.

ta free verzia mi pekne funguje z ubuntu voci oraclu, instalaciu je uplne bezbolestna a netreba mat nic v OS okrem javy, vsetko si to nainstaluje samo. free verzia sa moze pouzivat aj na komerne ucely. jej najvacsia nevyhoda je ta, ze nezobrazuje obsah blobov. ale to sa da lahko vyriesit zopar transformaciami v sql, napriklad: SELECT utl_raw.cast_to_varchar2(DBMS_LOB.SUBSTR(MSG, 1999, 1)) FROM ACTIVEMQ_MSG WHERE ROWNUM < 10;

zaujimava comicsans prezentacia o OpenSSL a potencialnom nastupcovi LibreSSL.

Dozens of facts about the SSH protocol and why we should use it for more things. A few weeks ago, I wrote ssh-chat. The idea is simple: You open your terminal and type, $ ssh chat.shazow.net Unlike many others, you might stop yourself before typing "ls" and notice - that's no shell, it's a chat room!