如何检查 ssh-agent 是否已经在 bash 中运行? [英] How to check if ssh-agent is already running in bash?

问题描述

我的 Linux 环境中有一个示例 sh 脚本，它基本上运行的是当前 shell 的 ssh-agent，向它添加一个密钥并运行两个 git 命令:

I have a sample sh script on my Linux environment, which basically run's the ssh-agent for the current shell, adds a key to it and runs two git commands:

#!/bin/bash
eval "$(ssh-agent -s)"
ssh-add /home/duvdevan/.ssh/id_rsa

git -C /var/www/duvdevan/ reset --hard origin/master
git -C /var/www/duvdevan/ pull origin master

脚本实际上工作得很好，但每次运行它时我都会得到一个新进程，所以我认为它可能会成为一个性能问题，最终我可能会有无用的进程.

Script actually works fine, but every time I run it I get a new process so I think it might become a performance issue and I might end up having useless processes out there.

输出示例:

Agent pid 12109
Identity added: /home/duvdevan/.ssh/custom_rsa (rsa w/o comment)

此外，除此之外，是否可以找到现有的 ssh-agent 进程并将我的密钥添加到其中?

Also, along with all this, is it possible to find an existing ssh-agent process and add my keys into it?

推荐答案

不，真的，如何检查 ssh-agent 是否已经在 bash 中运行?

到目前为止的答案似乎没有回答原始问题...

No, really, how to check if ssh-agent is already running in bash?

Answers so far don't appear to answer the original question...

这对我有用:

if ps -p $SSH_AGENT_PID > /dev/null
then
   echo "ssh-agent is already running"
   # Do something knowing the pid exists, i.e. the process with $PID is running
else
eval `ssh-agent -s`
fi

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