Why Does My Go Code Return 'fork/exec . no such file or directory' When Using `exec.Command`?

Error: "fork/exec . no such file or directory" in Go with fork/exec

When running the following Go code, you may encounter the error "fork/exec . no such file or directory":

func loop1(gor_name string, ras_ip string) {
    // ...
    c := fmt.Sprintf("%s %s %s %s", "./goreplay  --input-file ", gor_name, " --input-file-loop --output-http ", ras_ip)
    cmd := exec.Command(c)
    // ...
}

This error occurs because the function exec.Command requires the program name as the first argument followed by its arguments. The code is currently specifying the entire command as a single string, leading to the error.

To resolve this issue, modify the code to use the correct function signature:

cmd := exec.Command("./goreplay", "--input-file", gor_name, "--input-file-loop", "--output-http", ras_ip)

In this updated code, the program name "goreplay" and its arguments are passed as separate parameters to exec.Command.

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