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Video Editing

Cut a video 8 seconds to 21 seconds

ffmpeg -ss 00:00:08 -to 00:00:21 -i input.mp4 -c copy output.mp4

Convert mp4 to gif

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dataset_path = "/path/to/Spark-The-Definitive-Guide/data/"

myRange = spark.range(1000).toDF("number")

divisBy2 = myRange.where("number % 2 = 0")

divisBy2.count()

flightData2015 = spark.read.option("inferSchema","true").option("header","true").csv(dataset_path + "flight-data/csv/2015-summary.csv")

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A tree outlining the modules (or site layout) for Data Science Guide

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==========================================          ==========================================
             TMUX COMMAND                                        WINDOW (TAB)
==========================================          ==========================================

List    tmux ls                                     List         ^a w
New          -s <session>                           Create       ^a c
Attach       a -t <session>                         Rename       ^a , <name>
Rename       rename-session -t <old> <new>          Last         ^a l               (lower-L)
Kill         kill-session -t <session>              Close        ^a &

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int ledPin = 10;    // LED connected to digital pin 9
int maxValue = 255;
int minValue = 0;
int increment = 5;
void setup()  { 
  // nothing happens in setup 
} 

void loop()  { 
  // fade in from min to max in increments of 5 points:

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All POSIX operating systems have 3 streams: stdin, stdout, and stderr. stdin is the input, which can accept the stdout or stderr. stdout is the primary output, which is redirected with >, >>, or |. stderr is the error output, which is handled separately so that any exceptions do not get passed to a command or written to a file that it might break; normally, this is sent to a log of some kind, or dumped directly, even when the stdout is redirected. To redirect both to the same place, use:

command > out.txt 2>&1