[clug] scp

Scott Ferguson scott.ferguson.clug at gmail.com
Thu Sep 7 10:11:25 UTC 2017

On 07/09/17 19:47, Bryan Kilgallin (iiNet) via linux wrote:
> Unfortunately no, Scott:
>> scott at aspire ~ $ ssh-copy-id testing.sunnyside

First run ssh-keygen to create a key on $tower
You must replace $tower with the actual name of your tower pc.
You must replace $laptop with the actual name of your laptop OR it's IP

> {
> /usr/bin/ssh-copy-id: ERROR: failed to open ID file
> }
> Complaining that there was no such ".pub" file in my desktop user
> directory!

First you need to generate a key!  See my previous comments...

> If you wish to send a file from $tower to $laptop:-
>  'Ideally' on $tower you should generate an ssh key using "ssh-keygen"
> and then authenticate that key on $laptop using "ssh-copy-id"

"man ssh-keygen" if you don't understand how to generate a key or can't
find a suitable tutorial on the internet (why reinvent the wheel?).

Notes: if you use the ssh or scp command without specifying a user, the
command assumes you mean run as the current user. i.e. if you are logged
in as "brian" @tower and "scp text.txt laptop:/$somewhere", the command
run is the equivalent of "scp text.txt brian at laptop:/$somewhere" (so you
better have a user with the same name on $laptop).

When you've run ssh-keygen on $tower you will have a directory created
in ~ called ~/.ssh

typical contents on $tower:/home/brian/.ssh is:-
authorized_keys   config       id_rsa.pub   id_rsa            known_hosts

typical contents on $laptop:/home/brian/.ssh when you've installed ssh
and run ssh-copy-id on $tower:-

Kind regards

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