obstschale

Octave CheatSheet

GNU Octave is a high-level interpreted language, primarily intended for numerical computations.
(via GNU Octave)

Hint: I also mad an octave docset for Dash: https://github.com/obstschale/octave-docset

Basics

chrismccoy

# alias to edit commit messages without using rebase interactive
# example: git reword commithash message
reword = "!f() {\n  GIT_SEQUENCE_EDITOR=\"sed -i 1s/^pick/reword/\" GIT_EDITOR=\"printf \\\"%s\\n\\\" \\\"$2\\\" >\" git rebase -i \"$1^\";\n git push -f;\n}; f"

# completely wipe git history 
wipe-history = "!f() { git add . && git reset --soft $(git rev-list --max-parents=0 HEAD) && git commit --amend -m \"${1:-sup}\" && git push --force; }; f"

# squash the last N commits
squash = "!f(){ git reset --soft HEAD~${1} && git commit --edit -m\"$(git log --format=%B --reverse HEAD..HEAD@{1})\"; };f"

rothgar

# Idempotent way to build a /etc/hosts file with Ansible using your Ansible hosts inventory for a source.
# Will include all hosts the playbook is run on.
# Inspired from http://xmeblog.blogspot.com/2013/06/ansible-dynamicaly-update-etchosts.html

- name: "Build hosts file"
  lineinfile: dest=/etc/hosts regexp='.*{{ item }}$' line="{{ hostvars[item].ansible_default_ipv4.address }} {{item}}" state=present
  when: hostvars[item].ansible_default_ipv4.address is defined
  with_items: groups['all']

somebox

#!/bin/bash

# A script to set up a new mac. Uses bash, homebrew, etc.

# Focused for ruby/rails development. Includes many utilities and apps:
# - homebrew, rvm, node
# - quicklook plugins, terminal fonts
# - browsers: chrome, firefox
# - dev: iterm2, sublime text, postgres, chrome devtools, etc.
# - team: slack, dropbox, google drive, skype, etc

arilivigni

- defaults:
    name: ci-workflow-provision
    description: |
        Managed by Jenkins Job Builder. Do not edit via web.
    concurrent: true
    scm:
        - git:
            url: 'https://code.engineering.redhat.com/gerrit/ci-ops-central'
            branches:
                - origin/master

garthk

wait4eth1() {
        CNT=0
        until ip a show eth1 | grep -q UP
        do
                [ $((CNT++)) -gt 60 ] && break || sleep 1
        done
        sleep 1
}
wait4eth1

gwillem

# Add this snippet to the top of your playbook. 
# It will install python2 if missing (but checks first so no expensive repeated apt updates)
# gwillem@gmail.com

- hosts: all
  gather_facts: False
  
  tasks:
  - name: install python 2
    raw: test -e /usr/bin/python || (apt -y update && apt install -y python-minimal)

magnetikonline

Dependabot for Golang based repositories

Minimal YAML configuration for enabling Dependabot within a Golang based repository.

Place dependabot.yaml at .github/dependabot.yaml within a target repository and you should be good to go.

Configuration dependabot-grouped.yaml implements package grouping, in this example all packages related to AWS Golang SDK with updates will be rolled up into a single Dependabot pull request.

Reference