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valk /
Last active January 3, 2022 14:10 — forked from jexchan/
Multiple SSH keys for different github accounts

How to access multiple github accounts with different SSH Keys settings

Create different public keys

create different ssh keys according the article Mac Set-Up Git

$ ssh-keygen -t rsa -C ""
valk / HowTo: Sorted disk usage (du)
Created December 6, 2020 15:06 — forked from antespi/HowTo: Sorted disk usage (du)
List first level directories inside a directory, sorted by size. Useful when your disk is full and you are searching something to erase or move elsewhere.
du -k -d1 * | sort -nr | cut -f2 | xargs -d '\n' du -sh
valk / small_vega_chart.json
Created October 1, 2020 22:41
Small series chart with Vega
"$schema": "",
"height": 60,
"width": 120,
"padding": 0,
"autosize": "fit",
"description": "Google's stock price over time.",
"data": {
"url": "data/stocks.csv"
<!DOCTYPE html>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
body { margin: 0; box-sizing: border-box; }
.header { width: 100%; height: 36px; background: #DAE3ED; padding: 14px; color: #111; }
.search { margin: 0 40px; }
.search__input { height: 26px; width: 40%; border-radius: 4px; padding: 4px 8px;
valk / server.rb
Last active August 29, 2015 14:10
Tiny server that allows working with static files or anything else written in Ruby.
#!/usr/bin/env ruby
# In order to run:
# > ruby server.rb
# Or add execution permissions and run:
# > ./server.rb
# Then point your browser to http://localhost:1234/your_file.html
valk / wheregem.rb
Created November 22, 2014 20:52
Find the location of the specified gem. Usage: ruby wheregem.rb activerecord
gemname = ARGF.argv[0]
spec = Gem::Specification.find_by_name(gemname)
gem_root = spec.gem_dir
gem_lib = gem_root + "/lib"
puts gem_lib
=Clicking links and buttons=
click_link('Link Text')
click('Link Text') # Click either a link or a button
click('Button Value')
diff --git a/gc.c b/gc.c
--- a/gc.c
+++ b/gc.c
@@ -77,6 +77,41 @@ void *alloca ();
#define GC_MALLOC_LIMIT 8000000
+#define HEAP_MIN_SLOTS 10000
+#define FREE_MIN 4096
#!/usr/bin/env bash
# Tested for Ubuntu 12.04
[[ "$(id -u)" -ne "0" ]] && echo "must be root!" && exit 1
apt-get update
apt-get install -y build-essential zlib1g-dev libyaml-dev libssl-dev wget rsync
valk / fast_populate_mysql_random_strings.sql
Created June 20, 2013 10:13
Create test table in MySQL and ultra-fast populate it with random strings. Usual INSERTS would take 100x times slower. This gist was prepared to benchmark LIKEs on inserted data. Further optimizations can be made based on this
last_name VARCHAR(255) NOT NULL,
first_name VARCHAR(255) NOT NULL,
drop procedure prepare_data;
delete from test where id>0;