如何为在 bash 中提示输入的命令提供密码? [英] How to provide password to a command that prompts for one in bash?

问题描述

我正在编写一个 UNIX shell 函数，它将执行一个命令，提示用户输入密码.我想将密码硬编码到脚本中并将其提供给命令.我试过将密码输入到命令中，如下所示:

I'm writing a UNIX shell function that is going to execute a command that will prompt the user for a password. I want to hard-code the password into the script and provide it to the command. I've tried piping the password into the command like this:

function() {
    echo "password" | command
}

这可能不适用于某些命令，因为该命令可能会在提示输入密码之前刷新输入缓冲区.

This may not work for some commands as the command may flush the input buffer before prompting for the password.

我也试过将标准输入重定向到一个包含像这样的密码的文件，但这也不起作用:

I've also tried redirecting standard input to a file containing the password like this, but that doesn't work either:

function() {
    echo "password" > pass.tmp
    command < pass.tmp
    rm pass.tmp
}

我知道有些命令允许将密码作为参数提供，但我更愿意通过标准输入.

I know that some commands allow for the password to be provided as an argument, but I'd rather go through standard input.

我正在寻找一种快速而肮脏的方式将密码输入 bash 中的命令.

I'm looking for a quick and dirty way of piping a password into a command in bash.

推荐答案

看一看 autoexpect(体面的教程 此处).这与您无需使用诡计即可获得的快速和肮脏一样.

Take a look at autoexpect (decent tutorial HERE). It's about as quick-and-dirty as you can get without resorting to trickery.

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