A list of all not symbols and notations of elixir. Tried to have a base for comparision for other programming languages.
- === (strict)
- !== (strict)
- == (relaxed)
--- | |
# This has been tested with ansible 1.3 with these commands: | |
# ansible-playbook -i hosts ansible_conditionals_examples.yaml --extra-vars="hosts=myhosts isFirstRun=false" | |
# ansible-playbook -i hosts ansible_conditionals_examples.yaml --extra-vars="hosts=myhosts isFirstRun=true" | |
# ansible-playbook -i hosts ansible_conditionals_examples.yaml --extra-vars="hosts=myhosts" | |
# NB: The type of the variable is crucial! | |
- name: Ansible Conditionals Examples | |
hosts: $hosts | |
vars_files: |
# -*- mode: ruby -*- | |
# vi: set ft=ruby : | |
Vagrant.configure("2") do |config| | |
# All Vagrant configuration is done here. The most common configuration | |
# options are documented and commented below. For a complete reference, | |
# please see the online documentation at vagrantup.com. | |
# Every Vagrant virtual environment requires a box to build off of. | |
config.vm.box = "debian-7.2.0-amd64" |
# delete local tag '12345' | |
git tag -d 12345 | |
# delete remote tag '12345' (eg, GitHub version too) | |
git push origin :refs/tags/12345 | |
# alternative approach | |
git push --delete origin tagName | |
git tag -d tagName |
#!/bin/bash | |
# Sometimes you need to move your existing git repository | |
# to a new remote repository (/new remote origin). | |
# Here are a simple and quick steps that does exactly this. | |
# | |
# Let's assume we call "old repo" the repository you wish | |
# to move, and "new repo" the one you wish to move to. | |
# | |
### Step 1. Make sure you have a local copy of all "old repo" | |
### branches and tags. |
# | |
# If all files excluded and you will include only specific sub-directories | |
# the parent path must matched before. | |
# | |
/** | |
!/.gitignore | |
############################### | |
# Un-ignore the affected subdirectory |
# set prefix to control-f | |
set -g prefix C-f | |
#unbind system defined prefix | |
unbind C-b | |
# helps in faster key repetition | |
set -sg escape-time 0 | |
# start session number from 1 rather than 0 |
Magic words:
psql -U postgres
Some interesting flags (to see all, use -h
or --help
depending on your psql version):
-E
: will describe the underlaying queries of the \
commands (cool for learning!)-l
: psql will list all databases and then exit (useful if the user you connect with doesn't has a default database, like at AWS RDS)# vim style tmux config | |
# use C-a, since it's on the home row and easier to hit than C-b | |
set-option -g prefix C-a | |
unbind-key C-a | |
bind-key C-a send-prefix | |
set -g base-index 1 | |
# Easy config reload | |
bind-key R source-file ~/.tmux.conf \; display-message "tmux.conf reloaded." |
These rules are adopted from the AngularJS commit conventions.