鱼壳新功能：“ ssh：找不到命令”

Question

I'm trying to create a function that connects me to a ssh server then become su, and then ssh into another server so I did the following:

function test 
     ssh -t testuser@server1 'sudo ssh -t testuser@server2' 
end

When I execute it I get the following error ssh: command not found

But when I execute it straight to the terminal it works with no problems.

Answer 1

This sounds like a path issue on server1.

From the command line, what do you see if you type the following?

ssh -t testuser@server1 sudo which ssh 

If SSH is not in the path for root, you might need to specify full paths, such as something like:

ssh -t testuser@server1 sudo /usr/bin/ssh testuser@server2

You may need to adjust the paths to match your environment, of course.

Also, if you're trying to connect from root at server1 to server2, can you just ssh directly to root@server1? If so, you could perhaps use the "ProxyJump" functionality that was added with OpenSSH 7.3. This depends upon the ability to remotely login as root, which may not be an option, depending on your environment.

ssh -J root@server1 testuser@server2

Answer 2

My problem was solved when I added each one of them to the fish functions folder:

~/.config/fish/functions

I just created a file called myfunction.fish and inside of that file I pasted the function definition:

function myfunction 
     ssh -t testuser@server1 'sudo ssh -t testuser@server2' 
end

saved it, exited fish and now that function is permanent.