tuannvm

var output = fs.createWriteStream('/where/to/save'+filename);
    output.write(buffer);
    output.end();

tuannvm

#### For Dev1 first ####

#### announce an 30 mins maintenance #### 

####backup postgre 9.1 db (about 10 mins)########
su - postgres
pg_dumpall > <backup-db>.sql

####install postgre 9.4 (about 1 mins)####
wget http://yum.postgresql.org/9.4/redhat/rhel-6-x86_64/pgdg-centos94-9.4-2.noarch.rpm

tuannvm

Ansible cheatsheet

tuannvm

• http://stackoverflow.com/questions/2432764/change-the-uri-url-for-a-remote-git-repository

git remote set-url origin git://new.url.here

• unstage file

git reset HEAD <file>
git checkout -- <file>

tuannvm

Bash cheatsheet

• Bash cheatsheet
  • Helpful links
  • Kafka
  • Tricks & tips
    • Terminal Movement
    • Print Custom Format
    • Validate SSL certificate
• Wait until something works

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Everything about Docker!

tuannvm

- Receive feed: test1.vivatv.vn:80 (rtmp)
- Wowza ACP: test2.vivatv.vn:8443 (http)
- Feed output: test3.vivatv.vn:8080 (http)


bắn feed:
https://i.imgur.com/tvhRZb9.jpg

Link play:
http://test3.vivatv.vn:8080/vivatv-open/<stream key>_aac/playlist.m3u8

tuannvm

#!/bin/bash
root=/root/devops/tasks
find $root -type f -name '*README.txt*' > $root/file.txt
echo "" > $root/subjects.txt

while read line; do
sed -n '/\-\-\-/,/\-\-\-/{/\-\-\-/b;/\-\-\-/b;p}' "$line" >> $root/subjects.txt
done < $root/file.txt

sed -i '/^\s*$/d' $root/subjects.txt

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import os
import re

BASEPATH = 'root/devops/tasks'
courses = []
lastLine = []

folders = os.listdir(BASEPATH)

for folder in folders:

tuannvm

You've launched a revolutionary service not long ago, and were busy improving it for the last couple of months. When you finally decided that the service is perfect, you remembered that you created a feedbacks page long time ago, which you never checked out since then. Now that you have nothing left to do, you would like to have a look at what the community thinks of your service.

Unfortunately it looks like the feedbacks page is far from perfect: each feedback is displayed as a one-line string, and if it's too long there's no way to see what it is about. Naturally, this horrible bug should be fixed. Implement a function that, given a feedback and the size of the screen, splits the feedback into lines so that:

each token (i.e. sequence of non-whitespace characters) belongs to one of the lines entirely; each line is at most size characters long; no line has trailing or leading spaces; each line should have the maximum possible length, assuming that all lines before it were also the longest possible. Example