http://www.firewalls.com.br/showartigo.php?id=13

crux

http://crux.nu/download.html

Live cds:
http://www.frozentech.com/content/livecd.php

melhores:
http://advancemame.sourceforge.net/cd-download.html
http://www.devil-linux.org/
http://www.sentryfirewall.com/

Backup do MBR

Para salvar

dd if=/dev/hda of=mbr.bak bs=512 count=1

Restaurando

dd if=mbr.bak of=/dev/hda bs=512 count=1

Restaurando sem apagar a tabela de particoes

dd if=mbr.bak of=/dev/hda bs=446 count=1

Recuperação de Dados de disquetes com erros

dd bs=1440b conv=sync,noerror if=/dev/fd0 of=image.bin

resumo do kernel 2.6.2

PostgreSQL e DOSEMU

Acertando a hora do sistema e salvando no relogio da bios.

netdate tcp ntp.demon.co.uk && hwclock --localtime --systohc

Dicas para copiar via ssh usando o tar:

send:
tar cf - myfiles | ssh remotehost " ( cd /destination/path ; tar xf - ) "

get:
ssh remotehost "( cd /source/path; tar cf - desiredfiles ) " | tar xf -

multiple ssh connections can be strung together to move the file across multiple machines:

send through:
tar cf - myfiles | ssh remotehost1 " ssh remotehost2 \" ( cd /destination/path ; tar xf - ) \" "

get through:
ssh remotehost1 " ssh remotehost2 \"( cd /source/path; tar cf - desiredfiles ) \" " | tar xf -