Why are the arguments supplied for the command run through ssh interpreted by shell before they are passed to the command on the server side?

[Thorsten Glaser]

On Sat, 11 Jan 2020, Yuri wrote:

> On 2020-01-11 09:07, Thorsten Glaser wrote:
> > Yes, “command1” is expanded remotely, but you use the quoting rules
> > of the remote shell INSIDE the single quotes for the local POSIX shell
> > to prevent that (just replace all ' with '\'' and you’re set).
> 
> It arrives to the remote host with the outer quotes stripped, and the
> expansion takes place.

No, it doesn’t.

$ ssh localhost 'echo "a  string with '\'' and" '\''$pecial ch`aracters'\''  works'
a  string with ' and $pecial ch`aracters works

The command that gets run remotely is:
	echo "a  string with ' and" '$pecial ch`aracters'  works

This is handled according to normal quoting rules on the remote side,
as if you entered it interactively.

bye,
//mirabilos, shell developer (so knows what he’s saying)
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