[NBLUG/talk] Syntax of scp

[The Micxz]

Or the fast way and saves disk space:

tar -cvzf - homes | ssh home "cat > homes.bk.tar.gz"

--
Micxz

Mitch Patenaude wrote:

> The tarball will have the same absolute  or relative paths it was 
> created with...  so maybe
> you want to do something like
> 
> $ cd $HOME
> $ tar cfvz /tmp/home.tgz .
> {......}
> $ scp /tmp/home.tgz otherhost:.
> 
> Basically.. don't use an absolute path the home dir
> 
> $ tar cfvs /tmp/home.tgz /home/melvyn
> 
> because when you untar it, it will try to use the new path.  I think 
> there are arguments that will keep the path from being interpreted as 
> absolute, and maybe that's the default behavior now.  It used to be that 
> absolute paths were default, and a security breach was possible if you 
> could get root to untar a hostile file with (say) a new /etc/passwd in it.
> 
>  -- Mitch
> 
> 
> On Sunday, Feb 29, 2004, at 08:12 US/Pacific, Todd Cary wrote:
> 
>> Mitch -
>>
>> My goal is to tar ( -czvf ) /home /etc/passwd and /etc/shadow, scp it 
>> to my temporary computer that has a new Fedora Core 1 OS installed.  
>> Then I want to untar the file and have the temporary computer handle 
>> the work while I rebuild my production system.
>>
>> Never having done this before, I am not sure if the relative paths 
>> will be restored when I untar the file.
>>
>> Todd
>>
>> Mitch Patenaude wrote:
>>
>>> scp has an argument structure that is (purposefully) the same (or 
>>> really a subset) as that of rcp.  It was thought of as a drop-in 
>>> replacement.
>>>
>>> So.. the syntax for destination (or source) files is
>>>
>>> [[user@]hostname:]path
>>>
>>> without the syntactic key of the :at the end, the parser was treating 
>>> it just like a filename since 192.168.0.12 is valid file name.  If 
>>> neither of the source and destination are "remote", it behaves just 
>>> like cp.
>>>
>>> And you can specify multiple sources and one destination, all on 
>>> different machines, e.g.:
>>>
>>> scp calisto:index.html john at europa:/tmp/logo.png 
>>> widgets at www.example.com:public_html/NewProducts/.
>>>
>>> If you specify more than one host.. the authentications happen in the 
>>> order they appear on the command line.  I like to set up 
>>> $HOME/known_hosts with keys so that authentication is automatic, but 
>>> it will fall back on password authenication.
>>>
>>> Something else to note:  If there is no path, or if the path is 
>>> relative, then it's interpreted as relative to the home directory of 
>>> the user.  If the file isn't in the home dir, you can use an absolute 
>>> path.
>>>
>>>   -- Mitch
>>>
>>> _______________________________________________
>>> talk mailing list
>>> talk at nblug.org
>>> http://nblug.org/mailman/listinfo/talk
>>>
>>>
>>
>> -- 
>>
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-- 
Micxz