On-demand activation of Docker containers with systemd One of the features of systemd is its ability to defer the start-up of networked applications until their services are actually requested, a process referred to as socket activation. This isn’t really a new an idea; systemd borrowed the idea from launchd which has been in OS X since Tiger’s release in 2005, and the venerable Unix inetd has implemented a simpler version of it since the 1980s.

VSRE stands for “very short reply expected”. It’s a way for you to indicate to the recipients of your email that they have to reply with a short (usually one to five words) reply. Typical replies to VSRE are “Yes”, “No”, or “Tuesday”, or “Pls send more info". It is not a standard, just a human convention, like FYI, or RSVP. Why? We all get a ton of email. In most cases replying politely can be demanding.

http://www.jeffstory.org/wordpress/?p=1070 This is the first time in the history of Arch Linux that a GUI installer has been available! Fu-rch is an “authentic” Arch Linux installer, it does not install a distro derived from Arch! The live CD comes loaded with the Fu-rch GUI installer, gparted for editing the partitions your HDD prior to installing Arch, pacaur AUR, a command line AUR package installation helper, and pkgbrowser, a GUI Arch repo and AUR package browser.

http://collectd.org/ collectd gathers statistics about the system it is running on and stores this information. Those statistics can then be used to find current performance bottlenecks (i.e. performance analysis) and predict future system load (i.e. capacity planning). Or if you just want pretty graphs of your private server and are fed up with some homegrown solution you’re at the right place, too ;).

Bash locking Intro Once in a while i want to start a bash script and make sure it one at a time. So searching for solution for creating a lock file in bash, you want to have a solution that doesn’t create a race condition. Explanation Start defining which lockfile you want to use export lockfile=/tmp/lockfile.txt Get pid from lockfile, return empty string if file doesn’t exists or is empty For added protection removed character from the file that isn’t a number

6 Different Ways To Kill Unresponsive Programs in Linux . The good thing about Linux is that you almost never have to hit the reset button due to unresponsive or hung applications. There are so many ways you can gain back control that you never have to resort to such extreme measures. In this article, we take a look at some of the ways you can deal with unresponsive applications on your Linux box.

Bash debugging Introduction Once in a while i need to debug a bash script that i wrote, but i need to search how to get the line number of debug to a file, so easier for me to put it in mij blog, maybe it will help somebody else also. Howto Enable debugging set -x Add line numbers PS4=’$LINENO: ' Debug to external file exec 5> debug_output.txt BASH_XTRACEFD="5" PS4='$LINENO: ' set -x Disable debug