Como fazer backup de arquivos com apenas um sistema de recuperação mínimo?

Question

Eu só tenho acesso ao meu vserver através de um sistema de recuperação mínimo sobre o ssh. Não tem scp ou ftp instalado. Existe uma maneira fácil de fazer backup dos arquivos, de preferência diretamente para um servidor FTP, mas para a minha máquina local também seria bom.

Talvez isso ajude a mostrar as capacidades do sistema de resgate:

uname -a
Linux customer-rescue-v5 2.6.38.1-GN-SMP_x86_64 #5 SMP Fri Apr 8 13:27:16 CEST 2011 x86_64 QEMU Virtual CPU version 0.14.1 GenuineIntel GNU/Linux
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Answer 1

tar cvzf - file1 file2 dir1 dir2 | ssh user@remotesystem "cat > /big/partition/rescue.tgz"

seria minha preferência. Você pode até descompactar na hora:

tar cvzf - file1 file2 dir1 dir2 | ssh user@remotesystem "cd /big/partition; tar xvzfp -"

Mas como o fuero aponta, pode-se também

rsync -avz -e "ssh user@remotesystem" dir1 dir2 remotesystem:/big/

(meu rsync-fu não é tão bom, então é possível que o acima não seja perfeito). Mas você entendeu a ideia; ssh pode ser usado como o transporte do portador para qualquer número de coisas.