Web Tools Cheatsheet

A bunch of useful commands for various tools used for web development.

nvm

nvm : https://github.com/nvm-sh/nvm

nvm-windows : https://github.com/coreybutler/nvm-windows

Install the latest NodeJS version :

nvm install node

Install a specific version :

# List available versions
nvm ls-remote
nvm install $version

Temporarily change the used version :

nvm use $version
nvm run node --version

Permanently change the used version :

# Set latest
nvm alias default node

# Set specific
nvm alias default $version

Install the most recent NPM version for the current Node version :

nvm install-latest-npm

pm2

PM2 : https://pm2.keymetrics.io/docs/usage/quick-start/

Install PM2 :

npm install pm2@latest -g

Add a new app to PM2 & run it :

pm2 start index.js
pm2 start index.js --name $name
pm2 start index.js --watch # real-time reload

Run an app with a specific NodeJS version (through nvm) :

sudo pm2 start --name $name index.js --interpreter="/home/$user/.nvm/versions/node/$version/bin/node"

Generate an auto-startup file, and save currently running apps to the config :

pm2 startup
pm2 save

Manage PM2 apps :

pm2 list
pm2 restart $name_or_id
pm2 reload $name_or_id
pm2 stop $name_or_id
pm2 delete $name_or_id

Show the starting command used for an app, and NodeJS info :

pm2 show $name_or_id

│ script path       │ /path/to/app/index.js │
│ script args       │ N/A                   │
│ interpreter       │ node                  │
│ interpreter args  │ N/A                   │
│ node.js version   │ 10.23.0               │
│ node env          │ N/A                   │

Display logs from all apps :

pm2 logs

# Display both INFO and ERROR logs
pm2 logs --merge

# Last X lines
pm2 logs --lines $number_of_lines

Display monitoring UI for all apps :

pm2 dash

certbot

Dry-run :

certbot renew --dry-run

Renew existing certifcates :

certbot renew

Check the list of currentlty running vhosts :

a2query -s

Add a certificate to a newly-created Apache2 vhost :

certbot --apache -d [domain]