How to Debug 'exit status 1' Errors in Golang's exec.Command?

Debugging "exit status 1" Error in Golang's exec.Command

When running exec.Command in Golang, encountering an "exit status 1" error can be frustrating without detailed information. Fortunately, there is a solution to uncover the underlying cause.

Solution:

Utilize the Stderr property of the Command object. This property captures the standard error output generated by the command. Here's a modified version of the code snippet:

import (
    "bytes"
    "fmt"
    "os/exec"
)

func main() {
    cmd := exec.Command("find", "/", "-maxdepth", "1", "-exec", "wc", "-c", "{}", "\")
    var out bytes.Buffer
    var stderr bytes.Buffer
    cmd.Stdout = &out
    cmd.Stderr = &stderr
    err := cmd.Run()
    if err != nil {
        fmt.Println(fmt.Sprint(err) + ": " + stderr.String())
        return
    }
    fmt.Println("Result: " + out.String())
}

Explanation:

By assigning the Stderr property to a buffer (stderr), any error messages produced by the command will be captured and appended to the buffer. When the command exits with a non-zero exit code, the error and stderr output will be printed, providing more context for debugging.

Note:

Some commands may print errors to stdout instead of stderr, or return an error code of 0 with messages in stderr. Therefore, the behavior of each command should be taken into account when adapting this solution.

The above is the detailed content of How to Debug 'exit status 1' Errors in Golang's exec.Command?. For more information, please follow other related articles on the PHP Chinese website!