benjaminblack’s gists

benjaminblack / high-resolution-timers-in-node.md

Last active November 16, 2017 23:01

High-resolution timers in Node

function longrunning() {
    const timestamp = process.hrtime(); // returns high-resolution array pair: [seconds, nanoseconds]
    // ...
    // do something
    // ...
    const elapsed = (([sec, ns] = process.hrtime(timestamp)) => ((sec + (ns / 1e9)) * 1e3))(); // converts [seconds, nanoseconds] into milliseconds
}

benjaminblack / os-x-add-trusted-certificate-to-system-chain

Created April 4, 2016 01:59

OS X: Add a trusted certificate to the system chain

sudo security add-trusted-cert -d -r trustRoot -k /Library/Keychains/System.keychain site.crt

benjaminblack / bash-functions-implementing-working-directory-history

Last active November 26, 2015 02:31

Bash functions implementing working directory history

	#!/bin/bash

	export WDHIST=( $(pwd) )

	function cd {
	builtin cd $*
	if [ $? -eq 0 ]; then
	WDHIST[${#WDHIST[*]}]=$(pwd)
	fi
	}

benjaminblack / gist:72b30baa0e5dbc73914f

Created October 10, 2015 23:42 — forked from saetia/gist:1623487

Clean Install – OS X 10.11 El Capitan

OS X Preferences

most of these require logout/restart to take effect

# Enable character repeat on keydown
defaults write -g ApplePressAndHoldEnabled -bool false

# Set a shorter Delay until key repeat

benjaminblack / apache-ssi-server-side-includes-matching-variables-with-regular-expressions-using-the-v-function

Last active September 24, 2015 18:01

Apache SSI (Server Side Includes) matching variables with regular expressions using the 'v' function

	<!--#if expr="v('REQUEST_URI') =~ m#^/contact#" -->
	<!--#set var="pathclass" value="contact" -->
	<!--#elif expr="v('REQUEST_URI') =~ m#^/work#" -->
	<!--#set var="pathclass" value="work" -->
	<!--#elif expr="v('REQUEST_URI') =~ m#^/$#" -->
	<!--#set var="pathclass" value="about" -->
	<!--#endif -->

	<html lang="en-US" class="<!--#echo var="pathclass" -->">

benjaminblack / recursively-copy-a-remote-directory-with-rsync

Last active September 22, 2015 14:16

Recursively copy a remote directory with rsync

	rsync --checksum --human-readable --archive --verbose --compress --partial --progress --rsh=ssh <host>:<remote-path> <local-path>

	* Note: if <path> ends with /, the specified directory is not included in the copy, just its contents (recursively). I.e., to copy a remote "folder" to a local "folder", without copying the folder itself, include a trailing "/" in the remote path.

	Options:
	--checksum: skip based on checksum, not mod-time & size
	--human-readable: output numbers in a human-readable format
	--archive: archive mode; same as -rlptgoD (no -H)
	-r, --recursive: recurse into directories
	-l, --links: copy symlinks as symlinks

benjaminblack / counting-unique-404s-in-apache-log-files

Last active September 22, 2015 14:16

Counting unique 404s in Apache log files

	Tl;dr:

	gunzip --to-stdout logfile-*.gz \| grep " 404 " \| cut -d " " -f 7 \| sort \| uniq -c \| sort --numeric-sort --reverse > unique-404s.txt


	Starting with a bunch of gzipped log files, like "logfile-*.gz".

	First, uncompress to stdout:

	gunzip --to-stdout logfile-*.gz

benjaminblack / installing-debian-with-an-encrypted-boot-partition

Last active March 5, 2021 15:17

Installing Debian with an encrypted boot partition


	Create "rescue" partition, do minimal installation, boot (replace ? with root partition device):

	[Grub console:]
	> set root=(hd0,gptX)
	> linux /vmlinuz root=/dev/?
	> initrd /initrd.img
	> boot

	Bring it up to date and install cryptsetup.

Benjamin Black benjaminblack

OS X Preferences