devopstaku

FFMPEG=/opt/ffmpeg-live/bin/ffmpeg
for((;;))
do
    sleep 1
    FILENAME=stat123_for_eng_$(date +"%H%M%S").mp3
    echo "save audio into " $FILENAME
    $FFMPEG -f avfoundation -i ":0" -vn -acodec mp3 -b:a 96k -ar 44100 $FILENAME
done

devopstaku

The MIT License (MIT)
Copyright (c) 2013 Jamar Parris

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE S

devopstaku

#!/bin/bash
# A script to backup GitLab repositories.

GLAB_BACKUP_DIR=${GLAB_BACKUP_DIR-"gitlab_backup"}                   # where to place the backup files
GLAB_TOKEN=${GLAB_TOKEN-"YOUR_TOKEN"}                                # the access token of the account
GLAB_GITHOST=${GLAB_GITHOST-"gitlab.com"}                            # the GitLab hostname
GLAB_PRUNE_OLD=${GLAB_PRUNE_OLD-true}                                # when `true`, old backups will be deleted
GLAB_PRUNE_AFTER_N_DAYS=${GLAB_PRUNE_AFTER_N_DAYS-7}                 # the min age (in days) of backup files to delete
GLAB_SILENT=${GLAB_SILENT-false}                                     # when `true`, only show error messages
GLAB_API=${GLAB_API-"https://gitlab.com/api/v3"}                     # base URI for the GitLab API

devopstaku

var http = require("http"),
    url = require("url"),
    path = require("path"),
    fs = require("fs")
    port = process.argv[2] || 8888;

http.createServer(function(request, response) {

  var uri = url.parse(request.url).pathname
    , filename = path.join(process.cwd(), uri);

devopstaku

] wc -l domains.txt 
     783 domains.txt

] time go run domain_lookup_parallel.go

real	0m5.743s
user	0m0.359s
sys	0m0.355s

] time go run domain_lookup_sequential.go

devopstaku

• Go Concurrency Patterns: Context
  
• Package context
• Context
  
• Context is for cancelation
  
• Context isn’t for cancellation
  
• Revisiting context and http.Handler for Go 1.7
  

---

• Why context.Value matters and how to improve it

devopstaku

1.同一台电脑可以有2个git账号（不同网站的）

文件路径：~/.ssh/config

首先不同网站，当然可以使用同一个邮箱，比如我的github，gitlab，bitbucket的账号都是monkeysuzie[at]gmail.com 这时候不用担心密钥的问题，因为这些网站push pull 认证的唯一性的是邮箱 比如我的windows 上 2个账号一个gitlab 一个github （用的都是id_rsa）

host github
  hostname github.com

Port 22

devopstaku

FROM nginx:alpine

# stock verison from php:alpine image

# ensure www-data user exists
RUN set -x \
	&& addgroup -g 82 -S www-data \
	&& adduser -u 82 -D -S -G www-data www-data
# 82 is the standard uid/gid for "www-data" in Alpine
# http://git.alpinelinux.org/cgit/aports/tree/main/apache2/apache2.pre-install?h=v3.3.2

devopstaku

Fluent-bit rocks

A short survey of log collection options and why you picked the wrong one. 😜

Who am I? Where am I from?

I'm Steve Coffman and I work at Ithaka. We do JStor (academic journals) and other stuff. How big is it?

Number	what it means
101,332,633	unique visitors in 2017