通过SSH远程运行脚本 [英] Run scripts remotely via SSH

问题描述

我需要从100台远程服务器上收集用户信息.我们拥有用于身份验证的公共/私有密钥基础结构，并且我已经配置了ssh-agent命令来转发密钥，这意味着我可以在没有密码提示的情况下在任何服务器上登录(自动登录).

I need to collect user information from 100 remote servers. We have public/private key infrastructure for authentication, and I have configured ssh-agent command to forward key, meaning i can login on any server without password prompt (auto login).

现在，我想在所有服务器上运行脚本以收集用户信息(我们在所有服务器上拥有多少个用户帐户).

Now I want to run a script on all server to collect user information (how many user account we have on all servers).

这是我收集用户信息的脚本.

This is my script to collect user info.

#!/bin/bash
_l="/etc/login.defs"
_p="/etc/passwd"

## get mini UID limit ##
l=$(grep "^UID_MIN" $_l)

## get max UID limit ##
l1=$(grep "^UID_MAX" $_l)

awk -F':' -v "min=${l##UID_MIN}" -v "max=${l1##UID_MAX}" '{ if ( $3 >= min && $3 <= max  && $7 != "/sbin/nologin" ) print $0 }' "$_p"

我不知道如何在没有交互的情况下使用ssh运行此脚本?

I don't know how to run this script using ssh without interaction??

推荐答案

由于您需要登录到远程计算机，因此AFAICT无法无ssh"执行此操作.但是，ssh接受登录后在远程计算机上执行的命令(而不是将启动的Shell).因此，如果您可以将脚本保存在远程计算机上，例如作为~/script.sh，您可以执行它而无需使用以下命令启动交互式shell

Since you need to log into the remote machine there is AFAICT no way to do this "without ssh". However, ssh accepts a command to execute on the remote machine once logged in (instead of the shell it would start). So if you can save your script on the remote machine, e.g. as ~/script.sh, you can execute it without starting an interactive shell with

$ ssh remote_machine ~/script.sh

脚本终止后，连接将自动关闭(如果您没有故意进行配置).

Once the script terminates the connection will automatically be closed (if you didn't configure that away purposely).

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