[CentOS] Emulate Ghost4Linux with standard Linux commands?

Sat Nov 28 15:19:38 UTC 2020
Valeri Galtsev <galtsev at kicp.uchicago.edu>


> On Nov 28, 2020, at 7:12 AM, Nicolas Kovacs <info at microlinux.fr> wrote:
> 
> Le 28/11/2020 à 08:13, Nicolas Kovacs a écrit :
>> Now here's the question. From within my live system, how could I compress
>> my system into a compact image and then send it to a distant FTP server?
> 
> I'll answer this myself, since I just experimented and found a strikingly
> simple solution using dd and SSH (better than FTP).
> 
> Backup the server over the network from a live rescue session:
> 
> # dd if=/dev/sda status=progress | gzip --fast - | \
>  ssh microlinux at backup.microlinux.fr \
>  dd of=centos-7.9-server-image.gz
> 
> Restore this image from a live rescue session:
> 
> # ssh microlinux at backup.microlinux.fr \
>  dd if=centos-7.9-server-image.gz | \
>  gunzip --fast - | dd of=/dev/sda status=progress
> 

As you mention “compress” in your question, you could also add -C flag to ssh command (to turn on compression)

Valeri


> Why didn't I think of this before ?
> 
> :o)
> 
> Niki
> 
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