Tags

• activerecord 4
• administration 1
• angularjs 1
• arguments 2
• array 6
• assets 3
• associations 7
• authentification 1
• autossh 1
• backup 2
• bash 4
• before_action 1
• beginner 1
• binstubs 1
• boolean 1
• boot 1
• bots 1
• bundle 1
• bundler 1
• callback 1
• capistrano 1
• case 1
• certbot 1
• check_box 1
• checksum 1
• chef 1
• collapse 1
• collections 1
• coloured
• compression 2
• configuration 6
• conflict_resolution 2
• constraints 1
• contexts
• convert 1
• cut 4
• date 4
• datetime 1
• default
• default_scope 1
• deployment 1
• design 1
• development 1
• devise 2
• discard 1
• dns 1
• downgrade 1
• download 1
• ecdsa
• email_configuration 1
• event
• event_binding 1
• events 1
• feed_database 1
• fetch 1
• file_combination 2
• file_manipulation 8
• filter 1
• find 6
• fingerprint 1
• firewall 3
• flexbox 1
• focus 1
• for 1
• form 2
• gemfile 1
• gemsets 1
• git 2
• glyphicons 1
• grep 5
• groups 1
• grub 1
• habtm 1
• helper 1
• helpers 4
• http 1
• icon 2
• image 1
• import_data 1
• index 1
• initialisation 1
• input_form_validation 1
• installation 1
• intro 1
• iptables 3
• iso8601 1
• jekyll 1
• join 1
• js 1
• kitty 1
• layout 1
• lc_ctype
• less 1
• letsencrypt 1
• limits 2
• linux 2
• listeners
• locate 1
• log 2
• logger 1
• loops 2
• lsof 1
• mail 1
• md5 1
• mediaqueries 1
• memoization 1
• merge 1
• migrations 1
• monitoring 5
• netstat 2
• network 1
• new_app 2
• new_install 2
• nginx 2
• nmap 1
• notifications 1
• numbering 1
• onbeforeunload 1
• params 1
• paste 1
• pdf 1
• performance 1
• pg_dump 2
• popup 1
• positioning 2
• postgres 1
• prompt
• psql 2
• public_key 1
• putty 1
• rails 1
• rake 4
• random 1
• read 2
• read_files 1
• rebase 2
• regedit 1
• regex 1
• rescue 1
• restore 1
• revert 1
• routes 1
• rsa
• rspec 1
• rsync 1
• ruby 1
• rvm 1
• scope 1
• script 1
• scroll 1
• secrets 1
• security 7
• sed 3
• seed_data 1
• selectors 1
• selinux 1
• server 3
• service 1
• sha256 1
• shared-folder 1
• shell 1
• shell_command 1
• sockets 1
• sort 3
• splat 2
• srp 1
• ssh 3
• ssh-agent 1
• ssh_agent 1
• sshkit
• ssl 1
• string 1
• stub 1
• sudoers 1
• system 4
• t 1
• target 1
• terminal_configuration 1
• text_manipulation 6
• time 3
• tools 5
• tr 1
• translations 1
• transparent 1
• traverse 1
• tutorial 1
• until 1
• usb 1
• users 1
• validation
• values
• viewport 1
• views 1
• virtualbox 1
• visudo 1
• vm 1
• watermark 1
• week_number 1
• whenever 1
• while 2
• workflow 3
• wrk 1

activerecord

• Scope of a range of dates
• Belongs_to through association
• Scope with aggregate functions on associations
• Activer record associations

administration

• Linux System info

angularjs

• AngularJS

arguments

• How to pass url to view and call it with parameters
• Default values, required arguments, keyword arguments and splats in Ruby

array

• How to merge arrays in Ruby
• Get random array element
• Cluster array - group adjacent values
• Sum array elements in Ruby
• Get an array of one field of each record in ruby
• Best method to sort an array in ruby

assets

• Rails load js scripts per controller
• How to use assset helpers in a controller
• How to include subfolders in assets

associations

• Belongs_to through association
• How to filter registers whose has many association is empty
• Multiple has_many associations beetween same tables
• Specify order in has_many association
• HABTM association migration
• Eager load
• Activer record associations

authentification

• Simple user authentification

autossh

• Autossh

backup

• Automatic postgresql database backup
• rsync to download backup from server

bash

• Bash initialisation files
• Types of linux shells
• Check if it's a login shell
• Bash

before_action

• Pass block to before_action filter

beginner

• Jekyll Introduction

binstubs

• Rails binstubs vs bundler binstubs

boolean

• Boolean comparision in Bash

boot

• Boot and GRUB

bots

• How to prevent bots indexing images folder or file

bundle

• Do not bundle install on new app creation

bundler

• Rails binstubs vs bundler binstubs

callback

• Model callbacks vs object responsability

capistrano

• Creating server in DreamHost.com

case

• Case statement in Bash

certbot

• SSL certificate issued by Let's Encrypt with new Certbot client

check_box

• Check_box_tag for collections

checksum

• Calculate checksum on Windows

chef

• Using Chef to provision a Rails and Postgres server

collapse

• MediaQuery for Bootstrap Collapse Menu Button

collections

• Check_box_tag for collections

coloured

compression

• Working with compression
• Linux

configuration

• PostgreSQL recommended configuration
• nginx
• Linux
• bash aliases
• Whenever gem
• cronjob

conflict_resolution

• Move a local branch to the head
• Resolve a conflict and test a remote branch in local machine before merging

constraints

• Rails routes constraints

contexts

convert

• How to convert a string into date in JS

cut

• Useful networking commands
• Print gateway IP addr
• Find ports used by tcp for services imap3 and imaps
• Duplicate files with another extension

date

• Rails time in time_zone
• Convert seconds to d h m
• How to convert a string into date in JS
• Date and DateTime differences

datetime

• Date and DateTime differences

default

default_scope

• Devise and user default scope

deployment

• Creating server in DreamHost.com

design

• Advanced CSS

development

• SSL in local development

devise

• Devise and user default scope
• Custom devise mails

discard

• Discard local changes and rever local master to origin

dns

• Creating server in DreamHost.com

downgrade

• How to downgrade a gem in Rails

download

• rsync to download backup from server

ecdsa

email_configuration

• Email configuration

event

event_binding

• Javascript

events

• Javascript

feed_database

• Rake task to feed the database

fetch

• Move a local branch to the head

file_combination

• Sort file contents
• Combine file contents

file_manipulation

• How to find and colour a pattern in a text file with grep
• Read text file
• Search patterns in a file
• Report or delete repeated lines in sorted file
• Change characters inside a file
• Sort file contents
• Combine file contents
• Text/file manipulation

filter

• Filter files by date with bash

find

• Filter files by date with bash
• Useful networking commands
• Traverse folders recursively and replace 1st line of text files
• Find files by name and delete them
• Find files by name and copy them
• Duplicate files with another extension

fingerprint

• HOST fingerprint

firewall

• IPTables
• Firewalld and iptables
• Creating server in DreamHost.com

flexbox

• Advanced CSS

focus

• RSpec improvements in speed with focus

for

• Loops in Bash

form

• How to pass all input fields of a form to a http request with jQuery
• Check_box_tag for collections

gemfile

• How to downgrade a gem in Rails

gemsets

• List gems in RVM gemsets

git

• Move a local branch to the head
• Creating server in DreamHost.com

glyphicons

• How to load Glyphicons with Bootstrap when they are not being shown

grep

• Print gateway IP addr
• Find ports used by tcp for services imap3 and imaps
• Add line to text files that contains some pattern
• How to find and colour a pattern in a text file with grep
• Text/file manipulation

groups

• About users and groups

grub

• Boot and GRUB

habtm

• HABTM association migration

helper

• Rails helper to create links

helpers

• How to include helpers in views directly
• How to pass url to view and call it with parameters
• How to use assset helpers in a controller
• Rails text helpers

http

• How to pass all input fields of a form to a http request with jQuery

icon

• Cluster-icons-for-maps
• Bootstrap Glyphicons

image

• Add watermark with CarrierWave

import_data

• Seed data from a file

index

• Numbering sections and paragraphs with CSS

initialisation

• Bash initialisation files

input_form_validation

• Input field validation in JS

installation

• Postgresql installation

intro

• Jekyll Introduction

iptables

• IPTables
• Firewalld and iptables
• Creating server in DreamHost.com

iso8601

• Humanize seconds in Ruby

jekyll

• Jekyll Introduction

join

• Combine file contents

js

• Calculate week number in JS

kitty

• Terminal configuration in Kitty Putty

layout

• Nested layouts in Rails

lc_ctype

less

• How to put colors in LESS

letsencrypt

• SSL certificate issued by Let's Encrypt with new Certbot client

limits

• Security limits
• How to execute script/command at boot time

linux

• Creating server in DreamHost.com
• Linux

listeners

locate

• Creating server in DreamHost.com

log

• GIT log with dates
• GIT list tags with dates

logger

• Custom logger

loops

• While Loop in bash
• Loops in Bash

lsof

• Security

mail

• Custom devise mails

md5

• Calculate checksum on Windows

mediaqueries

• MediaQuery for Bootstrap Collapse Menu Button

memoization

• 4 Simple Memoization Patterns in Ruby (and One Gem)

merge

• How to merge arrays in Ruby

migrations

• HABTM association migration

monitoring

• start stop delayed_job with monit
• Monitoring delayed jobs with monit
• Linux monitoring tools - load average
• Monitoring Linux system with TOP
• Monit - system monitorization tool

netstat

• Nginx netstat
• Security

network

• Print gateway IP addr

new_app

• Do not bundle install on new app creation
• New app

new_install

• Creating server in DreamHost.com
• REFINERY CMS clean install

nginx

• Creating server in DreamHost.com
• nginx

nmap

• Security

notifications

• Push notifications with Sinatra

numbering

• Numbering sections and paragraphs with CSS

onbeforeunload

• Preventing data loss when leaving page with onbeforeunload event

params

• How to eliminate values from params hash that are not valid option keys

paste

• Combine file contents

pdf

• How to render html from controller action responding to pdf format

performance

• Rails performance considerations

pg_dump

• Automatic postgresql database backup
• Restore postgresql database

popup

• How to open a popup from Rails

positioning

• How to fix at top some element as it is scrolled up
• JavaScript Debounce Function

postgres

• Creating server in DreamHost.com

prompt

psql

• Automatic postgresql database backup
• Restore postgresql database

public_key

• SSH passwordless authentication with public key

putty

• Terminal configuration in Kitty Putty

rails

• Creating server in DreamHost.com

rake

• Automated Tasks with Rake
• Rake assets:precompile error with EXECJS runtime error
• Rake task to feed the database
• Rake tasks

random

• Get random array element

read

• Useful networking commands
• Duplicate files with another extension

read_files

• Read text files

rebase

• GIT REBASE: Move one branch ahead
• Move a local branch to the head

regedit

• W8-W10 no reconoce CD/DVD-ROM

regex

• How to use regex in sublime to find posts by category

rescue

• Retry when rescue from error

restore

• Restore postgresql database

revert

• Discard local changes and rever local master to origin

routes

• Rails routes constraints

rsa

rspec

• RSpec improvements in speed with focus

rsync

• rsync to download backup from server

ruby

• Creating server in DreamHost.com

rvm

• Creating server in DreamHost.com

scope

• Search and Filter Rails Models Without Bloating Your Controller

script

• How to execute a ruby script outside project root folder

scroll

• Detecting scroll position with JS

secrets

• Add sensible data in secrets file

security

• How to manually detect and ban the attacker ips
• How to block php requests in Nginx
• Security limits
• How to execute script/command at boot time
• SSH, SSH-AGENT and security
• SELinux
• Security

sed

• Traverse folders recursively and replace 1st line of text files
• Substitute 1st line
• Text/file manipulation

seed_data

• Seed data from a file

selectors

• CSS Selectors

selinux

• Creating server in DreamHost.com

server

• How to set defaults options for rails server command
• Linux System info
• Monit - system monitorization tool

service

• Postgres service

sha256

• Calculate checksum on Windows

shared-folder

• Mount a Virtualbox shared folder

shell

• 6 Ways to Run Shell Commands in Ruby

shell_command

• Bash

sockets

• sockets in Ruby

sort

• Get an array of one field of each record in ruby
• Best method to sort an array in ruby
• Sort file contents

splat

• Ruby functions with optional parameters
• Default values, required arguments, keyword arguments and splats in Ruby

srp

• Model callbacks vs object responsability

ssh

• sshd config
• sshd config
• Creating server in DreamHost.com

ssh-agent

• Autostart ssh agent

ssh_agent

• SSH Agent

sshkit

ssl

• SSL certificate issued by Let's Encrypt with new Certbot client

string

• String manipulation in Bash

stub

• Stub vs query

sudoers

• About users and groups

system

• Linux System info
• Monit - system monitorization tool
• nginx
• Linux

t

• Tailing log files with Capistrano 3

target

• Get and set default target

terminal_configuration

• Terminal configuration in Kitty Putty

text_manipulation

• Search patterns in a file
• Report or delete repeated lines in sorted file
• Extract strings from a file
• Count lines, words in a file
• Change characters inside a file
• Text/file manipulation

time

• Rails time in time_zone
• How to change timezone in Linux
• Humanize seconds in Ruby

tools

• Linux useful commands
• Monitoring delayed jobs with monit
• Linux monitoring tools - load average
• Monitoring Linux system with TOP
• Regular expressions

tr

• Text/file manipulation

translations

• Change model validation error message

transparent

• Non-Transparent Elements Inside Transparent Elements

traverse

• Recursively travers folders and change file name

tutorial

• Jekyll Introduction

until

• Loops in Bash

usb

• How to connect a usb memory stick to linux

users

• About users and groups

validation

values

viewport

• How to move the viewport in JS

views

• How to include helpers in views directly

virtualbox

• Install Fedora in VirtualBox VM

visudo

• About users and groups

vm

• Install Fedora in VirtualBox VM

watermark

• Add watermark with CarrierWave

week_number

• Calculate week number in JS

whenever

• Capistrano & whenever

while

• While Loop in bash
• Loops in Bash

workflow

• GIT REBASE: Move one branch ahead
• Resolve a conflict and test a remote branch in local machine before merging
• Discard local changes and rever local master to origin

wrk

• WRK: HTTP BENCHMARKING TOOL