joeblau

Securely erase an external disk using dd on OSX

1. Plug in your SD card, HDD, or other block device and then use the following command to see which /dev/diskN node it's located on:

diskutil list

2. Unmount the disk where “N� is the number of the disk taken from the above command:

adam-p

It's not immediately obvious how to pull down the code for a PR and test it locally. But it's pretty easy. (This assumes you have a remote for the main repo named upstream.)

Getting the PR code

1. Make note of the PR number. For example, Rod's latest is PR #37: Psiphon-Labs/psiphon-tunnel-core#37

2. Fetch the PR's pseudo-branch (or bookmark or rev pointer whatever the word is), and give it a local branch name. Here we'll name it pr37:

$ git fetch upstream pull/37/head:pr37

tsiege

ANNOUNCEMENT

I have moved this over to the Tech Interview Cheat Sheet Repo and has been expanded and even has code challenges you can run and practice against!






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mattlewissf

git add -p is your friend

git add -p is basically "git add partial (or patch)"

Patch mode allows you to stage parts of a changed file, instead of the entire file. This allows you to make concise, well-crafted commits that make for an easier to read history. This feature can improve the quality of the commits. It also makes it easy to remove parts of the changes in a file that were only there for debugging purposes - prior to the commit without having to go back to the editor.

It allows you to see the changes (delta) to the code that you are trying to add, and lets you add them (or not) separately from each other using an interactive prompt. Here's how to use it:

from the command line, either use

• git add -p

gitaarik

Git Submodules basic explanation

Why submodules?

In Git you can add a submodule to a repository. This is basically a repository embedded in your main repository. This can be very useful. A couple of usecases of submodules:

• Separate big codebases into multiple repositories.

tpoisot

import networkx as nx
import numpy as np
import itertools

## We define each S* motif as a directed graph in networkx
motifs = {
    'S1': nx.DiGraph([(1,2),(2,3)]),
    'S2': nx.DiGraph([(1,2),(1,3),(2,3)]),
    'S3': nx.DiGraph([(1,2),(2,3),(3,1)]),
    'S4': nx.DiGraph([(1,2),(3,2)]),

XVilka

THIS GIST WAS MOVED TO TERMSTANDARD/COLORS REPOSITORY.

PLEASE ASK YOUR QUESTIONS OR ADD ANY SUGGESTIONS AS A REPOSITORY ISSUES OR PULL REQUESTS INSTEAD!

diego898

thanks to @neurodyne and this link for updated instructions

This works with the following versions of termsrv.dll

x64 - termsrv.dll - 6.3.9600.17095

Find	Replace
39813C0600000F849E310500	B80001000089813806000090
090085C07F078BD8	090085C090908BD8

jhgaylor

class A(models.Model):
    things = models.ManyToManyField("B", through=ThroughModel)

class B(models.Model):
    text = models.TextField()

class ThroughModel(models.Model):
    a = models.ForeignKey(A)
    b = models.ForeignKey(B)
    extra = models.BooleanField()

pjdietz

VirtualBox Host-Only Static IP

My typical setup for a development box in VirtualBox uses two NICs. The first uses NAT to allow the box to communicate with the outside world through my host computer’s network connection. (NAT is the default, so shouldn't require any setup.) The second is a "host-only" connection that allows my host and guest to interact.

To create a host-only connection in VirtualBox, start by opening the preferences in VirtualBox. Go to the "Network" tab, and addd a Host-only Network. Modify the host-only network, and disable DHCP. Make a note of the IP address. (Feel free to set the IP address as well, if you like.)

Next, assign this host-only adapter to the virtual machine. Select the VM and press "Settings". Go to the "Network" tab, and select "Adpater 2". Enable the adapter, set it to a "Host-only Adapter", and select the adpater you created above.

Temporary