在Go中启动定义为别名的终端命令

Question

I am writing a program in Go that sends some commands. I can run any command that is in the $PATH. I check that the command is runnable with the LookPath function.

path, err := exec.LookPath("pwd")

and then run it with the following command:

func Run(command string, args []string) string {
    cmd := exec.Command(command, args...)

    output, err := cmd.CombinedOutput()
    if err != nil {
        logging.PrintlnError(fmt.Sprint(err) + ": " + string(output))
        return ""
    }
    return string(output)
}

The Run("pwd", "") is working But if I am using an alias, it doesnt' work.

For instance, I have alias l='ls -lah' in my ~/.bash_aliases file, but when I want to run that command in Go, it doesn't work.

Run("l") is not working.

I have the following error message :

exec: "l": executable file not found in $PATH:

I tried as well to use another method to run some alias' command.

func RunCmd(cmd string) string {
    out, err := exec.Command(cmd).Output()
    if err != nil {
        logging.PrintlnError("error occured")
        logging.PrintlnError(fmt.Sprint(err))
    }
    fmt.Printf("%s", out)

    return string(out)
}

But it is not working as well.

Do you know what function I can use to launch a command that is defined as an alias in my shell? I tried to launch bash -c cmd but unfortunately as well.

Thanks

Answer 1

If you want to launch a command that is defined as an alias in your ~/.bashrc or~/.bash_aliases files, you can use the bash -c cmd command described in the other comments. Nevertheless, you must implement it in a proper way in Go. Here is the command:

exec.Command("/bin/bash", "-c", "aliasCmd "+ _alias_arguments)

However, you should not have your program to rely on a user defined alias. ;-)