Why Does Running \'sudo go run\' Result in an \'Executable File Not Found\' Error?

Executing Go Programs with Sudo

In a Linux system, it's common practice to use sudo to execute commands that require elevated privileges. However, running Go programs with sudo go run main.go may result in an "executable file not found" error.

This error occurs because the environment variables, such as GOPATH and GOROOT, are not correctly set for the root user. By default, sudo resets the environment when it executes a command, removing any environment variables set by the user's shell.

Solution

Instead of running sudo go run main.go, the recommended approach is to first build the Go program into a binary and then execute the binary with sudo. This ensures that the binary has the correct environment variables set.

Here's how you can achieve this:

1. If you're in the directory containing main.go, you can build the binary using:

go build

2. Execute the binary with sudo:

sudo ./mycapt

Alternatively, you can install the binary to your GOPATH bin directory with:

go install

And then execute it with:

sudo $GOPATH/bin/mycapt

By following this approach, you can execute Go programs with sudo while ensuring that the necessary environment variables are correctly set for the root user.

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