FW:Kalie, ti zhmia epa8a?

[Kostas Liakakis]

On Wed, 3 Dec 1997, Thalis Kalfigopoulos wrote:

> (Variation no. 2.1)
> Eida mesa sto arxeio passwd dipla apo ka8e onoma xrhsth kai mia seira apo
> > akatalabistikoys xarakthres. Ixera oti eiani to passwd encrypted. Kai
> epeidh einai ligaki vlameno , otan apofasisa na allaxw to passwd tou root,
> ekanan edti to arxeio kai egrapsa to passwd se morfh "xyma_text"
> Dhladh:
> htan		root:^th#dSeN7*:......
> kai to ekana	root:Eimai_VlaMeN0:....
> 
> Giati den mporw na kanw login san root??? 

Ox aman :-) ekeinoi oi para3enoi xarakthres pou eides htan to DES
encryption tou password tou root. Ta passwords kryptografountai kai
grafontai etsi sto passwd giati apo thn fysh tou to passwd prepei na
mporei na to diabazei olos o kosmos.. an eixe ta passwords se kanoniko
keimeno... 

Tora ti na kaneis... hmm... exeis lilo? otan 3ekinas to linux, sto prompt 
tou lilo, dose: linux init=/bin/bash (me thn proypo0esh oti linux einai 
to onoma apo to image pou 3ekinas kanonika patontas enter)

0a kanei mount to root filesystem kai 0a se bgalei se ena prompt. ekei 
eisai superuser. tora:

mount -n -o remount,rw /

ok, tora exeis kai r/w to root fs sou.
vi /etc/passwd
pake kai sbhse to Eimai_VlaMen0. Ase dld kati tetoio:
root::klp klp...
sose to to passwd
shutdown -r now
otan 0a 3ana3ekinhsei, o root den 0a exei password. bale ena kai eisai 
enta3ei.

-K.


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