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ZD620 Configuration

ZD620 and ZD420 Users Guide (en)
Zebra Setup Utilities: Sending Printer Commands and Receiving Data
Zebra Programming Guide

Use default WML

To restore the factory Zebra menus, you need to set display.root_wml property to its default and delete the custom WMINDEX.WML file. See Zebra Setup Utilities: Sending Printer Commands and Receiving Data for how to communicate with the printer. If you want, you can also use the ZSU to backup the WMINDEX.WML file before deleting it. There are likely a nu

Here are several different ways to test a TCP port without telnet.

BASH (man page)

$ cat < /dev/tcp/127.0.0.1/22
SSH-2.0-OpenSSH_5.3
^C

$ cat &lt; /dev/tcp/127.0.0.1/23

Semantic Commit Messages

See how a minor change to your commit message style can make you a better programmer.

Format: <type>(<scope>): <subject>

<scope> is optional

Example

Docker Hub 镜像加速器

国内从 Docker Hub 拉取镜像有时会遇到困难，此时可以配置镜像加速器。Docker 官方和国内很多云服务商都提供了国内加速器服务。

Dockerized 实践 https://github.com/y0ngb1n/dockerized

配置加速地址

Ubuntu 16.04+、Debian 8+、CentOS 7+

Use curl to get the JSON response for the latest release
Use grep to find the line containing file URL
Use cut and tr to extract the URL
Use wget to download it

curl -s https://api.github.com/repos/jgm/pandoc/releases/latest \
| grep "browser_download_url.*deb" \
| cut -d : -f 2,3 \
| tr -d \" \

	#!/usr/bin/env python
	import argparse


	def main(command_line=None):
	parser = argparse.ArgumentParser('Blame Praise app')
	parser.add_argument(
	'--debug',
	action='store_true',
	help='Print debug info'

	According to all known laws
	of aviation,


	there is no way a bee
	should be able to fly.


	Its wings are too small to get
	its fat little body off the ground.

	' Disables Vanguard from starting when you boot your computer
	Call CreateObject("Shell.Application").ShellExecute("cmd.exe", "/c ""sc config vgc start= disabled & sc config vgk start= disabled""", "", "runas")

	defaults write com.apple.Dock appswitcher-all-displays -bool true
	killall Dock