[CentOS] script help

[Alfred von Campe]

On Oct 26, 2007, at 6:28, Tom Brown wrote:

> I am sure the answer here is really easy but i am stuck!

Getting the quoting right for remote commands in the shell is never  
an easy thing :-).

> # mount | grep data | awk '{print$1,$2,$3}'
>
> gives me the info i require locally, however i need to execute this  
> over about 1000 hosts so i run things remotely using ssh something  
> like
>
> # MOUNTER=`ssh $i 'mount | grep data | awk '{print$1,$2,$3}''`
>
> however this fails as at the end of the line there are 2 ticks eg '  
> together -
>
> Can anyone offer me some syntax help please?

I can usually get this to work with some trial an error by doubling  
up quotes and using backslahes but it's a frustrating experience.    
Instead, I use a different technique: I put a script in a network  
accessible place (i.e., a common NFS mount) and then use ssh to  
execute that script.

Alfred