Tag Archive for: Bash

Detect your IO-Link masters

/in /by

If your IO-Link masters are connected to your network, you can use arp-scan command-line tool to discover and fingerprint ARP (Address Resolution Protocol) hosts.

sudo arp-scan -l

How to compress a folder with a password using the terminal?

/in /by

If you can’t (or don’t want to) right click over the folder itself you can do as follows.

zip -er name_you_want.zip folder
  • e = encryption (use password)
  • r = recursive (everything inside that folder)

Are you a Web Developer running out of space in your hard disk?

/in /by

Have you ever tried to remove those node modules that you never use anymore? You could get surprise about the tremendous amount of space you can recover.

Now, you can do it easily with npkill, a minimalist and elegant package that will recursively look for you node_modules and will show you the space they take. You can then select which ones you want to erase to free up space.

Do not install it, just use npx in any path you want.

npx npkill

How to find where things are installed in Linux?

/in /by

You just need to use which command, for example lets find the installation path for Node.js

which node

This will return in my case:

/home/myusername/n/bin/node

Best way to install Node.js and NPM

/in /by

Node.js strongly recommend using a Node version manager like n to install Node.js and npm. They do not recommend using a Node installer, since the Node installation process installs npm in a directory with local permissions and can cause permissions errors when you run npm packages globally.

Install n directly from Github:

curl -L https://bit.ly/n-install | bash

Then check your versions (remember than node comes with npm)

node --version && npm --version

Note: if you are already having problems, first remove everything related with Node.js and NPM