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ffmpeg

Converting Audio into Different Formats / Sample Rates

Minimal example: transcode from MP3 to WMA:
ffmpeg -i input.mp3 output.wma

You can get the list of supported formats with:
ffmpeg -formats

You can get the list of installed codecs with:

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adb help // List all comands

== Adb Server
adb kill-server
adb start-server 

== Adb Reboot
adb reboot
adb reboot recovery 
adb reboot-bootloader

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Create Root CA (Done once)

Create Root Key

Attention: this is the key used to sign the certificate requests, anyone holding this can sign certificates on your behalf. So keep it in a safe place!

openssl genrsa -des3 -out rootCA.key 4096

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Build FFmpeg with Intel's QSV enablement on an Intel-based validation test-bed:

Build platform: Ubuntu 18.04LTS

Ensure the platform is up to date:

sudo apt update && sudo apt -y upgrade && sudo apt -y dist-upgrade

Install baseline dependencies first (inclusive of OpenCL headers+)

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Set up Django, Nginx and Gunicorn in a Virtualenv controled by Supervisor

Steps with explanations to set up a server using:

• Virtualenv
• Virtualenvwrapper
• Django
• Gunicorn

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Set the SVN_EDITOR var:
# export SVN_EDITOR=vim

==================================
SETTING UP A NEW SVN PROJECT
==================================
Create a new SVN "repo" (aka folder):
(NOTE: https is required for our new SVN, as well as --username)
# svn mkdir https://some/url/path/to/newRepo --username first.last

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#!/bin/bash

# sector_list sample as below:
# 0
# 512
# 4087578
# 4087579
# 6324224
# 
# You should build a sector_list firstly, and then execute this script to catch the files

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#!/bin/bash


# all ip of ssh fail login attempts
lastb | awk '{ print $3 }' | more

# today, sort, count number
lastb -i | grep "$(date '+%a %b %d')" | awk '{ print $3 }' | sort | uniq
# yesterday, sort, count number
lastb -i | grep "$(date '+%a %b %d' --date="1 day ago")" | awk '{ print $3 }' | sort | uniq

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#!/bin/bash

dir="./"

dirs=`ls -l $dir | grep '^d' | awk '{print $9}'`
# printf "About to process following dirs: \n${dirs}"


for d in $dirs;
do

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/*
 * Leecode 56. Merge Intervals
 * 
 * Example 1:
 * Input: [[1,3],[2,6],[8,10],[15,18]]
 * Output: [[1,6],[8,10],[15,18]]
 * Explanation: Since intervals [1,3] and [2,6] overlaps, merge them into [1,6].
 
 * Example 2:
 * Input: [[1,4],[4,5]]