🦫 Installing Go and Go-Based Tools (like hakrevdns) on Linux

🧭 Step 1: Check if Go is Installed

go version

If it says command not found, continue below.

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🧩 Step 2: Download and Install Go

Visit the official Go download page: 👉 https://go.dev/dl/

Then download the latest Linux tarball, for example:

wget https://go.dev/dl/go1.23.2.linux-amd64.tar.gz

Remove any old installation:

sudo rm -rf /usr/local/go

Extract it to /usr/local:

sudo tar -C /usr/local -xzf go1.23.2.linux-amd64.tar.gz

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⚙️ Step 3: Add Go to Your PATH

If you use Zsh (default on Kali, Parrot, etc.):

echo 'export PATH=$PATH:/usr/local/go/bin' >> ~/.zshrc
source ~/.zshrc

If you use Bash:

echo 'export PATH=$PATH:/usr/local/go/bin' >> ~/.bashrc
source ~/.bashrc

Check Go version:

go version

✅ Should print something like go version go1.23.2 linux/amd64

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🧠 Understanding Go's Folder Structure

It’s important to understand how Go separates its compiler from user-installed tools:

Location	Purpose	Owner
/usr/local/go	Go compiler & standard library	Root/system
~/go/bin	Where Go installs new tools (like httpx, hakrevdns, etc.)	Your user
/usr/local/bin	Where you can move tools to make them globally available	Root/system

🔍 Explanation

• /usr/local/go → contains the Go runtime and compiler. You should not install tools here.
• ~/go/bin → Go automatically puts new binaries here when you run go install ....
• /usr/local/bin → already in your PATH system-wide, so moving tools here makes them available everywhere.

Even though Go is installed in /usr/local/go, your tools are still built under ~/go/bin by default. This design keeps system files separate from user data.

If you want your tools to be globally accessible, you can manually move them:

sudo mv ~/go/bin/hakrevdns /usr/local/bin/

Now you can run it from anywhere:

hakrevdns -h

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🧰 Step 4: Install a Go Tool (Example: hakrevdns)

Method 1 — Regular Install (Default Behavior)

go install github.com/hakluke/hakrevdns@latest

This builds the binary in:

~/go/bin/hakrevdns

Move it globally:

sudo mv ~/go/bin/hakrevdns /usr/local/bin/

Test:

hakrevdns -h

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Method 2 — Automated Helper Function (Optional)

Add this function to your ~/.zshrc:

goinstall() {
    go install "$1"
    tool=$(basename "$1" | cut -d'@' -f1)
    sudo mv ~/go/bin/$tool /usr/local/bin/ 2>/dev/null
    echo "$tool installed globally."
}

Reload your shell:

source ~/.zshrc

Now install globally in one line:

goinstall github.com/hakluke/hakrevdns@latest

✅ Output example:

hakrevdns installed globally.

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🧠 Notes

• /usr/local/go/bin → Go compiler
• ~/go/bin → Build output for tools
• /usr/local/bin → Global tools location

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🔍 Verify

which go
which hakrevdns

Both should show paths under /usr/local/.

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✅ Example Summary

Task	Command
Install Go	sudo tar -C /usr/local -xzf go1.23.2.linux-amd64.tar.gz
Add PATH	export PATH=$PATH:/usr/local/go/bin
Install tool	go install github.com/hakluke/hakrevdns@latest
Move globally	sudo mv ~/go/bin/hakrevdns /usr/local/bin/