ssh and quoting 1

[columb]

I'm writing a procedure in bash which copies files around a number of servers. As a basic check I'm running

ssh remote_host 'cd /remote/dir;ls | wc -l'

So far all well and good.
However some of the servers are only reachable via a double jump. i.e. to run a comand you have to run

ssh remote1 ssh remote2 command

For simple commands this works fine. However, as soon as I try passing complex commands like the one above I get all sorts of problems with the quoting. The simple

ssh remote1 ssh remote2 'cd /remote/dir;ls | wc -l'

drops the single quotes on remote1 and runs the cd on remote2 but the ls on remote1. I've tried things along the lines of escaping the quotes, quoting the escaped quotes, etc. but nothing is working.

My last resort is to encapsulate the commands and distribute them as executable files but...

Any help much appreciated.


On the internet no one knows you're a dog

Columb Healy

 

[TrojanWarBlade]

Can't say I've needed to do this myself so I'm not too conversant with the details but I suggest you look at ssh-agent which I believe would allow you to do your double-jump directly (i.e. as though it were a single jump).



Trojan.

 

[LKBrwnDBA]

Best would be to exchange ssh public keys between source server and remote2 and go one step.

Otherwise try this:

ssh remote1 "ssh remote2 'cd /remote/dir;ls | wc -l'"

----------------------------------------------------------------------------
The person who says it can't be done should not interrupt the person doing it. -- Chinese proverb

 

[columb]

LKBrwnDBA
I would love to go there directly but firewall rules, yada, yada... and the double jump is my only option.

Your code works perfectly

Thanks


On the internet no one knows you're a dog

Columb Healy