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Tabs and Windows

Function	Shortcut
New Tab	⌘ + T
Close Tab or Window	⌘ + W (same as many mac apps)
Go to Tab	⌘ + Number Key (ie: ⌘2 is 2nd tab)
Go to Split Pane by Direction	⌘ + Option + Arrow Key
Cycle iTerm Windows	⌘ + backtick (true of all mac apps and works with desktops/mission control)

skratchdot

#!/usr/bin/env bash

for i in {1..24}
do
  cat /usr/share/dict/words | grep -E "^.{$i}$" | wc -l
done

: '

OUTPUT:

skratchdot

fun with words and bash

number of words 8 characters or less

cat /usr/share/dict/words | awk 'length <= 8' | wc -l

display a random 5 character word

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hexdump

here are a few tools to "pretty print" a string/file as a hex dump

bash tools:

• hexdump:
  https://man7.org/linux/man-pages/man1/hexdump.1.html
• od:
  https://man7.org/linux/man-pages/man1/od.1.html

skratchdot

The Complete MIDI 1.0 Detailed Specification states:

Special ID 7D is reserved for non-commercial use (e.g. schools, research, etc.)
and is not to be used on any product released to the public.

Here's a little bash one-liner to generate a somewhat unique 4-byte midi id:

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web-audio-api pr 2317

This gist is to clean up and minimize the amout of information I'm including in the following pr/issue.

• PR: WebAudio/web-audio-api#2317
• Issue: WebAudio/web-audio-api#2317

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ngrok qr codes

description

since the free version of ngrok creates random urls each time you run it, it gets time consuming typing the url on your phone. this bookmarklet lets you point your phone at the "status" page of ngrok's "web interface".

instructions

skratchdot

#!/usr/bin/env bash

# create 1 second 440Hz sine wave
sox -n -c 1 -r 44100 sine.wav synth 1 sine 440

# create 1 second of silence
sox -n -c 1 -r 44100 silence.wav trim 0 1

# create 1 second 440Hz sine wave followed by 1 second of silence
sox -V sine.wav silence.wav output.wav 

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python3 -m pip install --upgrade pip
python3 -m pip install --upgrade Pillow
python3 -m pip install --upgrade librosa
python3 -m pip install --upgrade pydub
python3 -m pip install --upgrade moviepy
python3 -m pip install --upgrade numpy scipy matplotlib ipython jupyter pandas sympy nose
python3 -m pip install --upgrade pysndfx
python3 -m pip install --upgrade pyopencl
python3 -m pip install --upgrade scikit-learn
python3 -m pip install --upgrade MulticoreTSNE

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## say with a random voice
say_rand () {
  say -v $(say -v ? | awk '{print $1}' | shuf -n1) "$@"
}

## say with a random english voice
say_rand_en () {
  say -v $(say -v ? | grep en_ | awk '{print $1}' | shuf -n1) "$@"
}