dypsilon

Frontend Development

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martijnvermaat

SSH agent forwarding and screen

When connecting to a remote server via SSH it is often convenient to use SSH agent forwarding so that you don't need a separate keypair on that server for connecting to further servers.

This is enabled by adding the

ForwardAgent yes

option to any of your Host entries in ~/.ssh/config (or alternatively with the -A option). Don't set this option in a wildcard Host * section since any user on the remote server that can bypass file permissions can now als use keys loaded in your SSH agent. So only use this with hosts you trust.

datagrok

Ideas for improvements to git log --graph

I will maybe someday get around to dusting off my C and making these changes myself unless someone else does it first.

Make the graph for --topo-order less wiggly

Imagine a long-running development branch periodically merges from master. The git log --graph --all --topo-order is not as simple as it could be, as of git version 1.7.10.4.

It doesn't seem like a big deal in this example, but when you're trying to follow the history trails in ASCII and you've got several different branches displayed at once, it gets difficult quickly.

robinsmidsrod

Add the following chunk to your existing ISC dhcpd.conf file.

if exists user-class and ( option user-class = "iPXE" ) {
    filename "http://boot.smidsrod.lan/boot.ipxe";
}
else {
    filename "undionly.kpxe";
}

(or see https://gist.github.com/4008017 for a more elaborate setup

CAFxX

📂 Persistent "pipes" in Linux

In a project I'm working on I ran into the requirement of having some sort of persistent FIFO buffer or pipe in Linux, i.e. something file-like that could accept writes from a process and persist it to disk until a second process reads (and acknowledges) it. The persistence should be both across process restarts as well as OS restarts.

AFAICT unfortunately in the Linux world such a primitive does not exist (named pipes/FIFOs do not persist

jamescasbon

"""
A really stupid python template language inspired by coffeekup, markaby.
Do not use this code, it will ruin your day.  A byproduct of insomnia.

TL;DR
-----

This module defines a template language that allows us to do:

    d = Doc()

daryltucker

# I have my own logging setup and had a hard time disabling console output in Flask. 

    app.logger.disabled = True
    log = logging.getLogger('werkzeug')
    log.disabled = True
    
# New, 2022 Method:

    logging.getLogger('werkzeug').disabled = True

adh

#!/bin/bash
IPv4=`ip a | sed -n '/eth0/,$p' | grep '^[[:space:]]*inet' | head -n 1 | sed -r 's/^[[:space:]]*inet[[:space:]]+([[:digit:].]+).*$/\1/'`
prefix=` echo $IPv4 | tr '.' '\n' | sed '1iobase=16'| bc | sed 's/^.$/0\0/'| tr -d '\n' | sed 's/^..../\0:/'`

cat >/etc/radvd.conf << EOF
interface eth1
{
        AdvSendAdvert on;

        prefix 2002:$prefix:100::/64

datagrok

This article is now published on my website: Prefer Subshells for Context.

matthewp

(function() {
  "use strict";

  Object.defineProperty(HTMLLinkElement.prototype, 'template', {
    get: function() {
      if(!/template/i.test(this.rel)) {
        return "";
      }

      var req = new XMLHttpRequest();