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Systemd Snapshots

What is systemd? Originally, back in the 2009 and 2010 days, Lennart Poettering was promoting the idea of systemd as a replacement for the System V (SysV) init subsystem which was then the default Linux init subsystem. Unfortunately like all of Poetterings projects, the goals and complexity of the project shifted over time. Nowadays, according to some reports, Poettering claims that systemd is not an init replacement but is a set of components needed to build up an operating system on top of the Linux kernel. The general idea is that systemd is the first process started and it then

We don’t need no stinkin bootloaders!

I have been saying for a number of years now that bootloaders such as GRUB2, rEFit, Clover and others have no place in modern EFI-based Linux systems and that the only reason to use such a bootloader is if you are on older system where you wish to be able to boot into one of a number of operating systems. The Linux Foundation is now a member of Unified EFI Forum (about time!) and has now got full access to the resources of that forum. As a result, kernel developer Greg Kroah-Hartman has been working on the procedures for how

Convert Integer to Float in Korn Shell

There is no explicit mechanism, such as float(integer), in the Korn Shell (ksh93) to convert an integer to a float which in the Korn Shell is by default a long double. By default, dividing integer 1 by 3 produces 0: $ integer x=1 $ echo $(( x/3 )) 0 $ So how to you get the result, 0.3333 …, which you probably were expecting? You can convert x to floating point and then do the division by replacing the 3 with either 3. or, as I normally do, with 3.0: $ integer x=1 $ echo $(( x/3. )) 0.333333333333333333 $