I came across this interesting post called journaling in vim by Danish Prakash which uses built-in functionality in Vim to make a painless digital journal workflow. The write-up is clear and I’ve been able to set up my workflow. Following is what I’ve learned during the process. Vim templates Vim templates allow you to specify a template to be used for new files with a certain extension. A template is a . Read more

Awesome blog post explaining how the syntax of Unix command line has varied over the years, and in different subcultures.

TIL about kernelnewbies. It is a community of aspiring Linux kernel developers who work to improve their Kernels and more experienced developers willing to share their knowledge. You can follow a tutorial for creating your first kernel patch, or read about Linux kernel Hacking. You can further learn about kernel subsystem as well.

Terraform is an open-source infrastructure as code software tool that provides a consistent CLI workflow to manage hundreds of cloud services. Terraform codifies cloud APIs into declarative configuration files. Terraform helps you manage all of your infrastructures as code and construct it as and when needed. Here are its key main features: A console that allows users to observe functions The ability to translate HCL code into JSON format A configuration language that supports interpolation A module count that keeps track of the number of modules applied to the infrastructure. Read more

Pick up a book on a topic you know next to nothing about. Put yourself in rooms where you’re the least knowledgeable person. That uncomfortable feeling, that defensiveness that you feel when your most deeply held assumptions are challenged — what about subjecting yourself to it deliberately? Change your mind. Change your surroundings… An amateur is defensive. The professional finds learning (and even, occasionally, being shown up) to be enjoyable; they like being challenged and humbled, and engage in education as an ongoing and endless process. Read more

TIL about Nala, a front-end for libapt-pkg. It is written in Python and uses the python-apt api. Installation Nala is the testing and sid repos for Debian. So a simple apt is sufficed. Installation via Repository echo "deb https://deb.volian.org/volian/ scar main" | sudo tee /etc/apt/sources.list.d/volian-archive-scar-unstable.list wget -qO - https://deb.volian.org/volian/scar.key | sudo tee /etc/apt/trusted.gpg.d/volian-archive-scar-unstable.gpg > /dev/null More details here Features Parrallel downloads - downloads 3 packages per unique mirror by defaults Fetch - get the fastest mirror History - print summary of transactions and manipulate history with nala history undo <ID> or nala history redo <ID>

Commands for moving Ctrl + a: move to the beginning of line Ctrl + e: move to end of line Ctrl + f: Move forward a character Ctrl + b: Move back a character Alt + f: Move forward to the end of the next word Alt + b: Move back to the start of the current of previsous word Commands for Manipulating the History Ctrl + n: Fetch the next command form the history list (same as Down arrow) Ctrl + p: Fetch the previous command form the history list (same as Up arrow) Alt + <: Move to the first line in the history ALt + >: Move to the end of the input history ( the line currently bein entered) Ctrl + r: begins a backward search through command history Alt + p: Search backward through the history using a non-incremental search for a string supplied by the usser Alt + n: Search forward through the history using a non-incremental search for a string supplied by the usser Alt + . Read more

Virtual x86 Virtual x86 emulates an x86-compatible CPU and hardware. It is written mainly in Rust,Javascript and C - source code can be found here. The following OS are supported: Arch Linux Damn Small Linux Buildroot Linux ReactOS Windows 2000 Windows 98 Windows 95 Windows 1.01 MSDOS FreeDOS FreeBSD OpenBSD 9front Haiku Oberon KolibriOS QNX JSLinux JSLinux which enable you to run Linux or other operating system in your browser. The emulator is based upon on TinyEMU You can learn about the techinical implementation here. Read more

Vimtutor At least one Vim trick you might not know A Vim Guide for Advanced Users Vim Tips for the Intermediate Vim User

Link: http://www.vimgolf.com/challenges/5f1e0217becb80000692b9c4 Rural post Simple challenge to remove all but the post code on each line Start file RD 5 Gore 9775 RD 6 Gore 9776 RD 7 Gore 9777 RD 1 Great Barrier Island 0991 RD 1 Greta Valley 7387 RD 1 Greytown 5794 RD 1 Hamilton 3281 RD 2 Hamilton 3282 End file 9775 9776 9777 0991 7387 5794 3281 3282 Solution: .,$norm $bd0j Explanation: .,$ - every line from current one till end of file norm - normal mode $ - go to end of line b - go to start of word d0 - delete till start of line j - move one line down RECAP Ranges: Here are the most interesting ranges you can use: * <number> - Any number <number> in your range refers to a line number. Read more

http://www.vimgolf.com/challenges/5ba020f91abf2d000951055c Com(m)a Trouble Someone was real stupid when placing his commas. Can you fix it? Start file ,0,1,2,3,4,5,6,7,89 ,1,2,3,4,5,6,7,8,90 ,2,3,4,5,6,7,8,9,01 ,3,4,5,6,7,8,9,0,12 ,4,5,6,7,8,9,0,1,23 56,7,8,9,0,1,2,3,4, 67,8,9,0,1,2,3,4,5, 78,9,0,1,2,3,4,5,6, 89,0,1,2,3,4,5,6,7, 90,1,2,3,4,5,6,7,8, End file 0,1,2,3,4,5,6,7,8,9 1,2,3,4,5,6,7,8,9,0 2,3,4,5,6,7,8,9,0,1 3,4,5,6,7,8,9,0,1,2 4,5,6,7,8,9,0,1,2,3 5,6,7,8,9,0,1,2,3,4 6,7,8,9,0,1,2,3,4,5 7,8,9,0,1,2,3,4,5,6 8,9,0,1,2,3,4,5,6,7 9,0,1,2,3,4,5,6,7,8 Solution: <C-V>Md6E.0p{EPZZ Explanation: <C-V> - visual mode M - Go to the first non-blank characterwise d - delete selected text 6E - Move to the end of the 6th line below . Read more

In the Beginning.. Was the Command Line. - Neal Stephenson. A dark screen with a blinking cursor. With a few keystrokes, you can hack the world. On the command line, you must know what you are doing. With a GUI, you can guess. You can guess a lot, actually, and just poke around all you want because most GUIs come with an undo feature. There is no “undo” on the command line. Read more

Serial terminal Configuration on the host Add a virtual serial port to the VM qm set <VMID> -serial0 socket (or) echo "serial0: socket" >> /etc/pve/qemu-server/<VMID>.conf Configuration on the guest Configure the terminal Enable a serial console systemctl enable [email protected] systemctl start [email protected] Instruct grub2 to send the boot messages on the serial port by editing /etc/default/grub and adding: GRUB_CMDLINE_LINUX="quiet console=tty0 console=ttyS0,115200" run update-grub afterward. Allow password-less root login on the serial console TIPS Read more

Sapiens: A Brief History of Humankind beautifully written by Yuval Noah Harari is an bold,engaging, and provocating book. Below are excerpts and paragraphs which filled me with a sense of wonder and changed the way I think. Sapiens and Tolerance Tolerance is not a Sapiens trademark. In modern times, a small difference in skin colour, dialect or religion has been enough to prompt one group of Sapiens to set about exterminating another group. Read more

“Here’s the deal, Wade. You’re something called a ‘human being’. That’s a really smart kind of animal. Like very other animal on this planet, we descended from a single-celled organism that lived millions of years ago. This happened by a process called evolution, and you’ll learn more about it later. But trust me, that’s really how we all got here. There’s proof of it everywhere, buried in the rocks. That story you heard? Read more