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Gabriele Mambrini gmambro

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@gunjanpatel
gunjanpatel / revert-a-commit.md
Last active May 3, 2024 20:50
Git HowTo: revert a commit already pushed to a remote repository

Revert the full commit

Sometimes you may want to undo a whole commit with all changes. Instead of going through all the changes manually, you can simply tell git to revert a commit, which does not even have to be the last one. Reverting a commit means to create a new commit that undoes all changes that were made in the bad commit. Just like above, the bad commit remains there, but it no longer affects the the current master and any future commits on top of it.

git revert {commit_id}

About History Rewriting

Delete the last commit

Deleting the last commit is the easiest case. Let's say we have a remote origin with branch master that currently points to commit dd61ab32. We want to remove the top commit. Translated to git terminology, we want to force the master branch of the origin remote repository to the parent of dd61ab32:

@hsanjuan
hsanjuan / photo_developing_cheatsheet.md
Last active April 17, 2018 09:27
Photo developing cheatsheet

Photograph developing cheat sheet

Working with ADOX products: http://www.adox.de .

35mm film developing

Requirements

  • Water at 20°C
  • ADONAL: Developer which equals to Rodinal
@trusktr
trusktr / DefaultKeyBinding.dict
Last active April 21, 2024 06:32
My DefaultKeyBinding.dict for Mac OS X
/* ~/Library/KeyBindings/DefaultKeyBinding.Dict
This file remaps the key bindings of a single user on Mac OS X 10.5 to more
closely match default behavior on Windows systems. This makes the Command key
behave like Windows Control key. To use Control instead of Command, either swap
Control and Command in Apple->System Preferences->Keyboard->Modifier Keys...
or replace @ with ^ in this file.
Here is a rough cheatsheet for syntax.
Key Modifiers
@thaljef
thaljef / cpanfile-dumper
Created May 3, 2014 03:01
Dump a cpanfile into targets for Pinto
#!/usr/bin/env perl
# USAGE: cpanfile-dumper path/to/cpanfile | pinto -r path/to/repo pull
use strict;
use warnings;
use Module::CPANfile;
my $file = shift or die 'Must specify a cpanfile';
my $cpanfile = Module::CPANfile->load($file);
@soarez
soarez / ca.md
Last active May 3, 2024 00:04
How to setup your own CA with OpenSSL

How to setup your own CA with OpenSSL

For educational reasons I've decided to create my own CA. Here is what I learned.

First things first

Lets get some context first.

@jaseg
jaseg / README.md
Last active March 26, 2024 14:21
Convert openldap .schema files to .ldif files

This is old!

Hey there,

occassionally, people still seem to stumble across this script because it seems it shows up in some search results. Please be aware that I made this script ten years ago, and by now, there is probably a better way to achieve the same result.

Have a nice day!

@billdwhite
billdwhite / index.html
Last active February 7, 2023 05:49
d3 treemap with child highlighting
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html;charset=utf-8">
<title>Treemap - Neat Zoom Effect</title>
<script type="text/javascript" src="http://www.billdwhite.com/wordpress/wp-content/js/browserdetect/browserdetect.js"></script>
<script type="text/javascript" src="http://www.billdwhite.com/wordpress/wp-content/js/d3/d3.js"></script>
<style type="text/css">
body {
overflow: hidden;
@hellerbarde
hellerbarde / latency.markdown
Created May 31, 2012 13:16 — forked from jboner/latency.txt
Latency numbers every programmer should know

Latency numbers every programmer should know

L1 cache reference ......................... 0.5 ns
Branch mispredict ............................ 5 ns
L2 cache reference ........................... 7 ns
Mutex lock/unlock ........................... 25 ns
Main memory reference ...................... 100 ns             
Compress 1K bytes with Zippy ............. 3,000 ns  =   3 µs
Send 2K bytes over 1 Gbps network ....... 20,000 ns  =  20 µs
SSD random read ........................ 150,000 ns  = 150 µs

Read 1 MB sequentially from memory ..... 250,000 ns = 250 µs