name="John"
echo ${name}
echo ${name/J/j}    #=> "john" (substitution)
echo ${name:0:2}    #=> "Jo" (slicing)
echo ${name::2}     #=> "Jo" (slicing)
echo ${name::-1}    #=> "Joh" (slicing)
echo ${name:(-1)}   #=> "n" (slicing from right)
echo ${name:(-2):1} #=> "h" (slicing from right)
echo ${food:-Cake}  #=> $food or "Cake"

#!/bin/bash

#Makes a directory ./monkeys and puts every single bored bored ape yacht club monkey in there

#Leif Messinger
let OFFSET=0
let BATCHSIZE=50
let LIMIT=100
mkdir monkeys
function parseResults(){
	sed 'y/,/\n/' | sed -e '/storage.opensea/d' -e '/https:\/\/lh3.googleusercontent.com\/Ju9CkWtV-1Okvf45wo8UctR-M9He2PjILP0oOvxE89AyiPPGtrR3gysu1Zgy0hjd2xKIgjJJtWIc0ybj4Vd7wv8t3pxDGHoJBzDB=s120/d' | egrep '"image_url":"(.*)"' | tr -d '\"' | sed 's/image_url://'
}
function downloadMonkeys(){
	while read -r line; do
		name=`echo "$line" | sed 's/https:\/\/lh3.googleusercontent.com\///'`
		wget -q -O "./monkeys/$name.png" "$line" &
	done
}
function queryMonkeys(){
	let progress=($OFFSET*100)/$LIMIT
	echo "Progress: $progress%"
	result=`curl -s --request GET --url "https://api.opensea.io/api/v1/assets?order_direction=desc&offset=$OFFSET&limit=$BATCHSIZE&collection=boredapeyachtclub"`
	if [[ "$result" =~ "Request was throttled" ]] || [ "$result" == "" ]; then

		#Retry download
		sleep 10
	else

		#Download Monkeys
		echo "$result" | parseResults | downloadMonkeys
		let OFFSET+=$BATCHSIZE
	fi

	#If not out of bounds, recurse
	if [ "$OFFSET" -lt "$LIMIT" ] || [[ "$result" =~ '"assets":[]' ]]; then
		queryMonkeys
	fi
}
echo "Downloading your monkeys into ./monkeys asynchronously."
queryMonkeys

for region in `aws ec2 describe-regions --output text | cut -f4`
do
     echo -e "\nListing Instances in region:'$region'..."
     aws ec2 describe-instances --query 'Reservations[*].Instances[*].{Instance:InstanceId,Subnet:SubnetId}' --region $region
done
#This script is to be used with any AWS CLI configured environment, it will list any EC2 instances and their associated subnet network ID's in JSON format

#!/bin/bash

for branch in $(git branch | cut -c 3-); do
    read -p "Delete local branch $branch? (y/n) " -n 1 -r
    echo ""
    if [[ $REPLY =~ ^[Yy]$ ]]; then
        git branch -D $branch
    fi
done

#!/bin/bash

#makefileMaker.sh by Leif Messinger

#Needs getDependencies.sh

CC="gcc"

#I have no idea why it's called CXX when it's a c++ compiler

#I know that cpp is c pre processor, but still, why X?
CXX="g++"

CXXFLAGS="-std=c++17 -O2"

#CFLAGS="-std=c17"
LIBRARIES="$@"

#Vulkan Flags for me

#LIBRARIES="-lglfw -lvulkan -ldl -lpthread -lX11 -lXxf86vm -lXrandr -lXi"

function compileAllFiles(){

	#output: bruh.o yeet.o

	#	CXX $CXXFLAGS bruh.o yeet.o -o output $LIBRARIES
	echo -n "output:"
	if compgen -G "*.cpp" &> /dev/null; then
		for f in *.cpp; do
			echo -n " ${f%.cpp}.o"
		done
	fi
	if compgen -G "*.c" &> /dev/null; then
		for f in *.c; do
			echo -n " ${f%.c}.o"
		done
	fi
	echo ""

	if compgen -G "*.cpp" &> /dev/null; then
		echo -e -n "\t$CXX $CXXFLAGS "
	else
		echo -e -n "\t$CC $CFLAGS "
	fi
	if compgen -G "*.cpp" &> /dev/null; then
		for f in *.cpp; do
			echo -n " ${f%.cpp}.o"
		done
	fi
	if compgen -G "*.c" &> /dev/null; then
		for f in *.c; do
			echo -n " ${f%.c}.o"
		done
	fi
	echo " -o output $LIBRARIES"
	echo ""
}

function compileAllObjectFiles(){

	#bruh.o: bruh.cpp yeet.h

	#	CXX $CXXFLAGS -c bruh.cpp $LIBRARIES
	if compgen -G "*.cpp" &> /dev/null; then
		for f in *.cpp; do
			echo -n "${f%.cpp}.o: $f"
			getDependencies.sh < $f
			echo ""

			echo -e "\t$CXX $CXXFLAGS -c $f"
			echo ""
		done
	fi

	#yeet.o: yeet.c

	#	CC $CFLAGS -c yeet.c $LIBRARIES
	if compgen -G "*.c" &> /dev/null; then
		for f in *.c; do
			echo -n "${f%.c}.o: $f"
			getDependencies.sh < $f
			echo ""

			echo -e "\t$CC $CFLAGS -c $f"
			echo ""
		done
	fi
}

compileAllFiles

compileAllObjectFiles


#does not work on windows
echo "clean:"
echo -e "\trm -f -v *.o output"
echo ""

echo "run:"
echo -e "\t./output"
echo ""

echo "debug:"
if compgen -G "*.cpp" &> /dev/null; then
	echo -e -n "\t$CXX $CXXFLAGS -g "
else
	echo -e -n "\t$CC $CFLAGS -g "
fi
if compgen -G "*.cpp" &> /dev/null; then
	for f in *.cpp; do
		echo -n " ${f}"
	done
fi
if compgen -G "*.c" &> /dev/null; then
	for f in *.c; do
		echo -n " ${f}"
	done
fi
echo " $LIBRARIES -o output"
echo ""

# Run "test" script on all packages
npm run test --workspaces


# Tip - this also works:
npm run test  -ws

----------------------------------------------------


# Runs "test" only on package-a
npm run test --workspace package-a


# Tip - this also works:
npm run test -w package-a

----------------------------------------------------


# Install `lodash` on `package-a`
npm install lodash --workspace package-a


# Install `tap` on `package-b` as a dev dependency
npm install tap --workspace package-b --save-dev


# Install `package-a` on `package-b`
npm install package-a --workspace package-b


# Install `eslint` in all packages
npm install eslint --workspaces