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How to Run a Binary File in Linux Using Bash

Running binary files in Linux is a fundamental task that often confuses new users. A binary file is an executable file that contains machine code, which the Linux kernel can directly execute. This guide explains how to run a binary file in Linux using Bash, ensuring you follow the correct steps to execute it safely and effectively.

What is a Binary File?

A binary file is a compiled program, usually in machine code, ready to be executed by the operating system. Examples include software installers, compiled applications, or system utilities.

Binary files typically have no file extension or may end with .bin or other specific extensions.

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Steps to Run a Binary File in Linux

1. Ensure the File is Executable

Before running a binary file, you need to verify that it has executable permissions.

  • Check permissions:

ls -l filename

  • Look for an x in the file permissions, e.g., -rwxr-xr-x.
  • Add executable permission (if missing):

chmod +x filename

2. Run the Binary File

Once the file is executable, you can run it from the terminal.

  • Run with the ./ prefix:

./filename

Example:

./install_script.bin

The ./ prefix specifies the file’s path in the current directory. Without it, the shell may search for the file in system-defined directories, and if it’s not found there, you’ll get a “command not found” error.

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3. Provide Full Path if Necessary

If the binary file is not in the current directory, you can specify its full path:

/home/user/directory/filename

Using Environment Variables

To make running binaries more convenient, you can add their directory to your system’s PATH variable.

  1. Edit the PATH Variable Temporarily:

export PATH=$PATH:/path/to/binary

  • This adds the directory to your PATH for the current session.
  • Add the Path Permanently: Append the directory path to your .bashrc or .bash_profile:

echo ‘export PATH=$PATH:/path/to/binary’ >> ~/.bashrc
source ~/.bashrc

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After this, you can run the binary without specifying its full path.

Running a binary file in Linux is straightforward with Bash when you follow these steps. Always ensure the file is executable, use the correct path, and handle dependencies as needed. By adhering to these practices, you can safely and efficiently execute binary files on your Linux system.
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