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subfinder tools for linux

 

subfinder

 

subfinder is a subdomain discovery tool that returns valid subdomains for websites, using passive online sources. It has a simple, modular architecture and is optimized for speed. subfinder is built for doing one thing only - passive subdomain enumeration, and it does that very well.

We have made it to comply with all the used passive source licenses and usage restrictions. The passive model guarantees speed and stealthiness that can be leveraged by both penetration testers and bug bounty hunters alike.

 

Features

  • Fast and powerful resolution and wildcard elimination modules
  • Curated passive sources to maximize results
  • Multiple output formats supported (JSON, file, stdout)
  • Optimized for speed and lightweight on resources
  • STDIN/OUT support enables easy integration into workflows
  •  subfinder

    Installation

    subfinder requires go1.24 to install successfully. Run the following command to install the latest version:

    1. copy url and past terminal command --  go install -v github.com/projectdiscovery/subfinder/v2/cmd/subfinder@latest

    Learn about more ways to install subfinder here: https://docs.projectdiscovery.io/tools/subfinder/install.

    2 copy and past terminal -- subfinder -h 

    Subfinder is a tool used for discovering valid subdomains of websites through passive online sources. It is commonly utilized by ethical hackers and bug bounty hunters during the reconnaissance phase of security assessments

     

     

     

     

    subfinder Tool in Linux

    subfinder is a subdomain enumeration tool written in the Go programming language. Subfinder is used for discovering passive subdomains of websites by using digital sources like Censys, Chaos, Recon.dev, Shodan, Spyse, Virustotal, and many other passive online sources. Subfinder is widely used by Ethical Hackers and Bug bounty hunters in the Information gathering Phase which is also known as Reconnaissance.

    SubFinder tool in linux

    Installing subfinder

    As subfinder is a Go tool you need to have the Go language package installed before installing subfinder.

    1. From Source(Recommended)

    All you need to do is open your terminal and paste this one line of code and press enter.

    GO111MODULE=on go get -v github.com/projectdiscovery/subfinder/v2/cmd/subfinder
    installing subfinder form source
    From Source

    2. From Binary

    Firstly download the release suitable for your OS from https://github.com/projectdiscovery/subfinder/releases/ and then unzip the folder and move the subfinder binary file to /usr/local/bin/ and you are good to go

    # download release from https://github.com/projectdiscovery/subfinder/releases/
tar -xzvf subfinder-linux-amd64.tar.gz
mv subfinder /usr/local/bin/
subfinder -h

    3. From Github

    Clone https://github.com/projectdiscovery/subfinder.git repository and change directory to subfinder/v2/cmd/subfinder and then type go build . (don't forget to put a '.' at the end ) now move the subfinder binary file to /usr/local/bin and subfinder is ready to use.

    git clone https://github.com/projectdiscovery/subfinder.git
cd subfinder/v2/cmd/subfinder
go build .
mv subfinder /usr/local/bin/
subfinder -h
    installing subfinder form GitHub
    From Github

    Retrieving the Subfinder list of attributes

    subfinder -h
    Subfinder help

    Working with SubFinder

    Here we will find out subdomains of the domain geeksforgeeks.org and setting a concurrency of 50. I got around 73 subdomains for geeksforgeeks.org in 4 seconds 71 milliseconds.

    subfinder -d geeksforgeeks.org -silent -t 50
    Working with subfinder
    Example usage of subfinder


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