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Simple ASM Command

Small shell helper to assemble, link and run Assembly programs quickly from the terminal.

Instead of running nasm and ld manually every time, this function assembles a .asm file, links it, and immediately executes the resulting binary.

Usage

asm program.asm

This will:

1. Assemble the file with nasm
2. Generate an object file (.o)
3. Link it using ld
4. Run the compiled binary

Example:

asm hello.asm

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Requirements

You need:

• nasm
• ld (usually included with binutils)
• a POSIX shell (bash / zsh)

Install dependencies if you don't have them.

Debian / Ubuntu / Kali

sudo apt install nasm binutils

Arch Linux

sudo pacman -S nasm binutils

Fedora

sudo dnf install nasm binutils

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Installation

Option 1 — Add to your shell config (recommended)

Copy the function into your shell config file.

For bash:

~/.bashrc

For zsh:

~/.zshrc

Then paste:

asm() {
    local file="$1"

    if [[ -z "$file" ]]; then
        echo "Usage: asm file.asm"
        return 1
    fi

    if [[ ! -f "$file" ]]; then
        echo "File not found"
        return 1
    fi

    local name="${file%.asm}"

    nasm -f elf64 -o "$name.o" "$file" &&
    ld -o "$name" "$name.o" &&
    "./$name"
}

Reload your shell:

source ~/.zshrc

or

source ~/.bashrc

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Option 2 — Install as a command in PATH

Create a script:

sudo nano /usr/local/bin/asm

Paste:

#!/usr/bin/env bash

file="$1"

[ -z "$file" ] && echo "Usage: asm file.asm" && exit 1
[ ! -f "$file" ] && echo "File not found" && exit 1

name="${file%.asm}"

nasm -f elf64 -o "$name.o" "$file" &&
ld -o "$name" "$name.o" &&
"./$name"

Make it executable:

sudo chmod +x /usr/local/bin/asm

Now you can run:

asm program.asm

from anywhere.

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Why?

Just a tiny utility to remove friction when experimenting with Assembly programs.

Assemble → link → run → repeat.

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Made with <3 by URDev