command [argument ...] in ssh(1): a footgun

[Thorsten Glaser]

On Sat, 27 May 2023, Brian Candler wrote:

>> has the effect you want; the first backslash is eaten by the
>> local shell.
>>
> Or is it?
>
> $ echo "ls -l a\ b"
> ls -l a\ b

Ah oops, in POSIX only when followed by [$`"\\\n] of course.
I’m not fond of “loose” backslashes though.

That does not detract from the point, ofc.

> Other shells may be different, of course.

That they do. (Same for echo: that may *also* eat that backslash.
For echo, basically, if the first argument begins with a hyphen-minus
or any argument contains a backslash, its use is not portable.)

bye,
//mirabilos
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