commandlinefu

commandlinefu

Simple nodejs module to easily get commandlinefu.com snippets in JSON format.

Install

npm install commandlinefu

Use

With nodejs:

// clfu.js
const clfu = require("commandlinefu");

clfu()
  .then((res) => console.log(res))
  .catch((e) => e);

node clfu.js output:

{
  "id": "5427",
  "command": "curl ifconfig.me",
  "summary": "Get your external IP address",
  "votes": "262",
  "url": "http://www.commandlinefu.com/commands/view/5427/get-your-external-ip-address"
}

This object will be referred as responseObject from now on.

Features

By default (no argument) it will returns a random responseObject.
You can pass a string as argument, in which case it will return an Array[] of responseObject{}.
Available arguments:

• "popular" returns an Array of popular responseObject (which tbh doesn't change much over time)
• "search:$var" returns an Array of responseObject related to $var

Example of dynamic search:

const userInput = "ssh"; // here you got user input as string

clfu(`search:${userInput}`)
  .then((res) => console.log(res))
  .catch((e) => e);
/* Outputs an array like : 
[
    {
        "id": "24887",
        "command": "ssh -L8888:localhost:80 -i nov15a.pem ubuntu@123.21.167.60",
        "summary": "port forwarding",
        "votes": "1",
        "url": "http://www.commandlinefu.com/commands/view/24887/port-forwarding"
    },
    {
        "id": "24879",
        "command": "rsync -e 'ssh -i /root/my.pem' -avz /mysql/db/data_summary.* ec2-1-2-4-9.compute-1.amazonaws.com:/mysql/test/",
        "summary": "rsync using pem file",
        "votes": "0",
        "url": "http://www.commandlinefu.com/commands/view/24879/rsync-using-pem-file"
    },
    {
        "id": "24863",
        "command": "cat myFile.json | ssh root@remoteSftpServer -o \"ProxyCommand=nc.openbsd -X connect -x proxyhost:proxyport %h %p\" 'cat > myFile.json'",
        "summary": "SFTP upload through HTTPS proxy",
        "votes": "0",
        "url": "http://www.commandlinefu.com/commands/view/24863/sftp-upload-through-https-proxy"
    }
]
*/

Discord bot

I originally wrote this for my discord bot. If you want to use this module for your own, feel free to check my (dirty) implementation :

• here is where I take user input & call my module to fetch stuff accordingly
• here are my format functions. Note that I divide the response into several chunks to get around Discord limitations (maximum 2000 characters for a message).

CLI

Nodejs make it easy to wrap functions into a custom CLI suiting your needs. In terminal :

mkdir myCli
cd ./myCli
npm init # you can spam 'return' key for now
npm i commandlinefu # grab this module
touch index.js

This is the content of your index.js :

const clfu = require("commandlinefu");

const commandlinefu = async () => {
  if (!process.argv.slice(2)[0]) {
    return await clfu()
    .then(res => console.log(res.command))
    .catch(e => console.error(e));
  }
  else if (process.argv.slice(2)[0]) {
    return await clfu(process.argv.slice(2)[0])
      .then(res => console.log(res))
      .catch(e => console.error(e));
};

commandlinefu();

That's it! Now back into your terminal:

node index.js # calling clfu without argument
ps auxw | awk '/(apache|httpd)/{print"strace -F -p " $2}' | sh # this is 'res.command' printed in stdout
node index.js search:ssh # calling clfu with "search:ssh" argument, we get an array like we're supposed to :
[
  {
    id: '24887',
    command: 'ssh -L8888:localhost:80 -i nov15a.pem ubuntu@123.21.167.60',
    summary: 'port forwarding',
    votes: '1',
    url: 'http://www.commandlinefu.com/commands/view/24887/port-forwarding'
  },
  {
    id: '24879',
    command: "rsync -e 'ssh -i /root/my.pem' -avz /mysql/db/data_summary.* ec2-1-2-4-9.compute-1.amazonaws.com:/mysql/test/",
    summary: 'rsync using pem file',
    votes: '0',
    url: 'http://www.commandlinefu.com/commands/view/24879/rsync-using-pem-file'
  },
  {...more objects}
]

This is the basic principle. You can parse & do your stuff with those arrays in the else if block of aforementioned index.js file.
If you never used process.argv before, this read should get you started

More

If you're looking for out-of-the-box CLI instead of a reusable function, it may be worth checking this repo.
At least it helped me decipher commandlinefu.com API endpoints, so thank you nire0510 :)

Todo

• supporting .mjs
• supporting browsers CHANGELOG