Provider | Singleton | Instantiable | Configurable |
---|---|---|---|
Constant | Yes | No | No |
Value | Yes | No | No |
Service | Yes | No | No |
Factory | Yes | Yes | No |
Decorator | Yes | No? | No |
Provider | Yes | Yes | Yes |
Once in a while, you may need to cleanup resources (containers, volumes, images, networks) ...
// see: https://github.com/chadoe/docker-cleanup-volumes
$ docker volume rm $(docker volume ls -qf dangling=true)
$ docker volume ls -qf dangling=true | xargs -r docker volume rm
# the following two lines give a two-line status, with the current window highlighted | |
hardstatus alwayslastline | |
hardstatus string '%{= kG}[%{G}%H%? %1`%?%{g}][%= %{= kw}%-w%{+b yk} %n*%t%?(%u)%? %{-}%+w %=%{g}][%{B}%m/%d %{W}%C%A%{g}]' | |
# huge scrollback buffer | |
defscrollback 5000 | |
# no welcome message | |
startup_message off |
#!/bin/bash | |
# Copyright © 2017 Google Inc. | |
# Licensed under the Apache License, Version 2.0 (the "License"); | |
# you may not use this file except in compliance with the License. | |
# You may obtain a copy of the License at | |
# | |
# http://www.apache.org/licenses/LICENSE-2.0 | |
# | |
# Unless required by applicable law or agreed to in writing, software |
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}
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:
SELECT table, | |
formatReadableSize(sum(bytes)) as size, | |
min(min_date) as min_date, | |
max(max_date) as max_date | |
FROM system.parts | |
WHERE active | |
GROUP BY table |
FROM nginx:alpine AS builder | |
# nginx:alpine contains NGINX_VERSION environment variable, like so: | |
# ENV NGINX_VERSION 1.15.0 | |
# Our NCHAN version | |
ENV NCHAN_VERSION 1.1.15 | |
# Download sources | |
RUN wget "http://nginx.org/download/nginx-${NGINX_VERSION}.tar.gz" -O nginx.tar.gz && \ |
// Auth0 custom rule | |
// Add Github Organizations to the user metadata | |
// | |
// This rule need the following configurations values | |
// AUTH0_DOMAIN_NAME: your auth0 domain name | |
// MANAGEMENT_CLIENT_ID: your auth0 management api client id | |
// MANAGEMENT_CLIENT_SECRET: your auth0 management api client secret | |
// | |
// You have to create an Management API Application with proper | |
// scope to allow rule to fetch user organizations. |
import cv2.cv as cv | |
import tesseract | |
gray = cv.LoadImage('captcha.jpeg', cv.CV_LOAD_IMAGE_GRAYSCALE) | |
cv.Threshold(gray, gray, 231, 255, cv.CV_THRESH_BINARY) | |
api = tesseract.TessBaseAPI() | |
api.Init(".","eng",tesseract.OEM_DEFAULT) | |
api.SetVariable("tessedit_char_whitelist", "0123456789abcdefghijklmnopqrstuvwxyz") | |
api.SetPageSegMode(tesseract.PSM_SINGLE_WORD) | |
tesseract.SetCvImage(gray,api) | |
print api.GetUTF8Text() |
#!/bin/bash | |
# from | |
# http://bergamini.org/computers/creating-favicon.ico-icon-files-with-imagemagick-convert.html | |
convert source-WxW.png -resize 256x256 -transparent white favicon-256.png | |
convert favicon-256.png -resize 16x16 favicon-16.png | |
convert favicon-256.png -resize 32x32 favicon-32.png | |
convert favicon-256.png -resize 64x64 favicon-64.png | |
convert favicon-256.png -resize 128x128 favicon-128.png |