Laeeth

- install the two shellscripts into the appropriate places under /etc/initramfs-tools
- run update-initramfs
- put "overlay=yes" on the kernel command line
- reboot

With the overlay in place, the real root is mounted readonly on /ro.
Only the root fs is changed, other filesystems are mounted normally.

Remove "overlay=yes" (or change it to something other than yes) and reboot to go back to readwrite.
(This probably means that you want the commandline config to live somewhere other than on the root fs, e.g. under /boot)

vedang

    - Specific Notmuch filters (and saved-searches) for:
      + The Feed (newsletters, blogs)
      + The Paper trail (receipts, ledger)
      + Screened Inbox (mail from folks you actually want to read)
      + Previously Seen (important mail that you've already read)
      + Unscreened Inbox (potential spam / stuff you don't want)
      
    - Elisp Functions to move / categorize emails from a particular sender. 
      + Adds tags needed by filters defined above to all email sent by a particular sender
      + Creates an entry in a DB file, which is used by the Notmuch post-new script when indexing new email, to auto-add the relevant tags.

schveiguy

import std.range;

struct StackFrame(T)
{
    StackFrame* prev;
    T range;
}

struct StackRange(T, alias recurse) if (isInputRange!(typeof(recurse(T.init))))
{

elliottmorris

rm(list = ls()) #reset the environment
library(tidyverse)
library(lubridate)
library(mgcv)

exponent_weight <- function(i) {
  exp(-0.04*i)
}

TODAY_DAY <- difftime(Sys.Date(),as.Date("2017-01-21"))

stain

[database]
path=/home/USER/mail


[user]
name=MyName MySurname
primary_email=me@example.com
other_email=me@example.org

MIvanchev

Running Windows software on the Raspberry Pi (and other ARM devices) with Wine

Contents

• Introduction
• Configuring a 3G/1G VM split (32-bit distros only)
• Installing Wine
  • Building Wine
• Running Windows software
• Build using Winelib

Khady

(use-package company
  :ensure t
  :custom
  (company-quickhelp-delay 0)
  (company-tooltip-align-annotations t)
  :hook
  ((prog-mode utop-mode) . company-mode)
  :config
  (company-quickhelp-mode 1)
  :bind

rondy

FWIW: I (@rondy) am not the creator of the content shared here, which is an excerpt from Edmond Lau's book. I simply copied and pasted it from another location and saved it as a personal note, before it gained popularity on news.ycombinator.com. Unfortunately, I cannot recall the exact origin of the original source, nor was I able to find the author's name, so I am can't provide the appropriate credits.

---

Effective Engineer - Notes

• By Edmond Lau
• Highly Recommended 👍
• http://www.theeffectiveengineer.com/

What's an Effective Engineer?

ericpulvino

#!/bin/bash

# Root Check
if [ $(whoami) != 'root' ]; then
        echo "ERROR: Must be root to run $0"
        exit 1;
fi

TRUSTED_PORTS=( swp1 swp3 )

Laeeth

Latency Comparison Numbers
--------------------------
L1 cache reference                            0.5 ns
Branch mispredict                             5   ns
L2 cache reference                            7   ns             14x L1 cache
Mutex lock/unlock                            25   ns
Main memory reference                       100   ns             20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy              3,000   ns
Send 1K bytes over 1 Gbps network        10,000   ns    0.01 ms
Read 4K randomly from SSD*              150,000   ns    0.15 ms