// check version
node -v || node --version

// list installed versions of node (via nvm)
nvm ls

// install specific version of node
nvm install 6.9.2

// set default version of node
nvm alias default 6.9.2

// switch version of node
nvm use 6.9.1

# Three ways of checking if a file exists in a shell script

FILE=/etc/resolv.conf

if test -f "$FILE"; then
    echo "$FILE exists."
fi

if [ -f "$FILE" ]; then
    echo "$FILE exists."
fi

if [[ -f "$FILE" ]]; then
    echo "$FILE exists."
fi

#Leif Messinger

#For when you want to search a lot of words in a file fast


#Arg 1 is the argument the list of words you want to search

#Arg 2 is the file you want to search


#-z means that it looks at the file as a whole, just treating newlines a characters.

#-r is regex. Needed for $, even tho the documentation says you don't need it. They are liars.

#First command replaces all . with \. and all - with \-

#Second command takes all newlines and replaces them with )|(

#Third command takes the trailing |( and deletes it

#Forth command puts a /( at the start

#Fith command puts /!d at the end. This tells it to not delete any lines that match the pattern.


#The second sed takes the output of the first sed as a command that searches any of the combined words

#-f - takes a command from the input
sed -z -r -e 's/\./\\\./g ; s/\-/\\\-/g' -e 's/\n/\)\|\(/g' -e 's/\|\($//' -e 'i/\(' -e 'a/!d' $1 | sed -r -f - $2

#!/bin/bash

# Turns 4 spaces into tabs.

# Mostly stolen from AI

# Define the directory to process
DIRECTORY=$1
TabCount=${2:-'4'}    #Defaults to 4


# Check if directory is specified
if [ -z "$DIRECTORY" ]; then
    echo "Error: Directory not specified."
    exit 1
fi


# Check if directory exists
if [ ! -d "$DIRECTORY" ]; then
    echo "Error: Directory does not exist."
    exit 1
fi


# Find all files in directory and subdirectories
FILES=$(find "$DIRECTORY" -type f)


# Loop through each file and unexpand it
for FILE in $FILES; do
	unexpand -t "$TabCount" "$FILE" > "$FILE.tmp"
	mv "$FILE.tmp" "$FILE"
done

echo "Done!"

# 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

#!/usr/bin/env bash


#Splits a command across a number of CELL machines

user=$(whoami)
if [[ -z $user ]]; then
	echo "whoami failed. Exiting..."
	exit 1
fi

command="$1"
if [[ -z $command ]]; then
	echo "Need to put in a command."
	exit 1
fi
shift

array=("$@")

let start=8
let stop=18

for ((i = $start; i <= $stop; i++)); do
	extraZero=$(if [[ "$i" -lt 10 ]]; then echo "0"; fi)
	domain="CELL${extraZero}${i}-CSE.ENG.UNT.EDU"
	let "index = i - start"
	echo ${#array[@]}
	if [[ ${#array[@]} != 0 ]] && [[ $index -ge ${#array[@]} ]]; then
		echo "$index > ${#array[@]}"
		break
	fi
	ssh -o StrictHostKeyChecking=accept-new "${user}@${domain}" -t "$command ${array[$index]}" &
done