ssp

How to extract a single file with its history from a git repository

These steps show two less common interactions with git to extract a single file which is inside a subfolder from a git repository. These steps essentially reduce the repository to just the desired files and should performed on a copy of the original repository (1.).

First the repository is reduced to just the subfolder containing the files in question using git filter-branch --subdirectory-filter (2.) which is a useful step by itself if just a subfolder needs to be extracted. This step moves the desired files to the top level of the repository.

Finally all remaining files are listed using git ls, the files to keep are removed from that using grep -v and the resulting list is passed to git rm which is invoked by git filter-branch --index-filter (3.). A bit convoluted but it does the trick.

1. copy the repository to extract the file from and go to the desired branch

rudelm

Autofs on Mac OS X

With autofs you can easily mount network volumes upon first access to the folder where you want to mount the volume. Autofs is available for many OS and is preinstalled on Mac OS X so I show you how I mounted my iTunes library folder using this method.

Prepare autofs to use a separate configuration file

autofs needs to be configured so that it knows where to gets its configuration. Edit the file /etc/auto_master and add the last line:

#
# Automounter master map
#

+auto_master # Use directory service

jakub-g

Introduction

For a long time Windows user, starting using Mac can be an exercise in frustration and keeping your nerves at bay. Many things don't work as expected, need to be activated in some ways, keyboard shortcuts are non-existent or wildly different.

This page is a living reference of a Windows long-timer trying to do basic stuff on a Mac. If you see an easier way to achieve certain things, don't hesitate to drop a comment.

Related links:

tarnacious

{ config, lib, pkgs, ... }:

with lib;

{
  imports =
    [ 
      <nixpkgs/nixos/modules/installer/cd-dvd/channel.nix>
      ./machine-config.nix
    ];

evanrelf

Install NixOS on ZFS With Opt-In State

Commands

# nvme0n1
# ├─nvme0n1p1    BOOT
# └─nvme0n1p2    LUKS CONTAINER
#   └─cryptroot  LUKS MAPPER
#     └─vg-swap  SWAP

matthewjberger

# Edit this configuration file to define what should be installed on
# your system.  Help is available in the configuration.nix(5) man page
# and in the NixOS manual (accessible by running ‘nixos-help’).

{ config, pkgs, ... }:

{
  imports =
    [ # Include the results of the hardware scan.
      ./hardware-configuration.nix

shirakaba

Background

I have a brand new M1 MacBook Pro. I have a long list of complaints with homebrew, so I want to try Nix as my package manager instead, along with Home Manager to control my setup on a per-user basis. Once I've set this all up, theoretically, I should be able to reuse the same configuration on any other Macs I own.

What is Nix?

A reproducible, declarative package manager.

More info:

lheckemann

#!/usr/bin/env bash
set -exuo pipefail

PROGRAM_NAME="$0"

inst() {
    local system="" host="" action="install" from="auto" mount=""
    local -a nixCopyArgs
    while [[ "$#" -gt 0 ]] ; do
        case "$1" in

runeksvendsen

# https://github.com/diddledani/macOS-Linux-VM-with-Rosetta#setting-up-rosetta

# 1. Run `sudo mkdir /var/run/rosetta`
# 2. Run `sudo mount -t virtiofs ROSETTA /var/run/rosetta`
# 3. Add the snippet below to /etc/nixos/configuration.nix

boot.binfmt.registrations.rosetta = {
  interpreter = /var/run/rosetta/rosetta;
  magicOrExtension = ''\x7fELF\x02\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x3e\x00'';
  mask = ''\xff\xff\xff\xff\xff\xfe\xfe\x00\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff\xff'';

djanatyn

Learning to use systemd-creds properly:

❯ pass show backups/notes | sudo systemd-creds encrypt --name=borg-notes - /tmp/borg-notes.creds

This encrypts with /var/lib/systemd/credential.secret, you can load using LoadCredentialEncrypted=:

• https://systemd.io/CREDENTIALS/

In a systemd unit, if i provide the property LoadCredentialEncrypted=borg-notes:/tmp/borg-notes.creds, then I can run systemd-creds cat borg-notes to get the password:

❯ sudo systemd-run -P --wait -p LoadCredentialEncrypted=borg-notes:/tmp/borg-notes.creds systemd-creds cat borg-notes