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[OT] haslo na reboot

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12 posts • Page 1 of 1
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rzezioo
Apprentice
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[OT] haslo na reboot

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Post by rzezioo » Mon Apr 11, 2005 5:06 pm

czy system da sie w jkais sposob zabezpieczyc haslem przed zrebootowaniem??
USE="refrigerator" emerge beer
http://fun.from.hell.pl/2003-05-27/russian_linux.jpg
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noobah
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Post by noobah » Mon Apr 11, 2005 5:42 pm

konkretniej proszę, czy chodzi tylko o komendę reboot, czy kombinację ALT+CTRL+DEL ?
the force is strong with me
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arach
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Post by arach » Mon Apr 11, 2005 6:00 pm

najpewniej oba
ble! :P
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rzezioo
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Post by rzezioo » Mon Apr 11, 2005 6:20 pm

no kazdy sposob. zeby po prostu bez podania hasla nie dalo sie zrebootowac kompa
USE="refrigerator" emerge beer
http://fun.from.hell.pl/2003-05-27/russian_linux.jpg
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lysek
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Post by lysek » Wed Apr 13, 2005 1:34 am

man chmod/chown :D
home: w budowie
gg: 4099964
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arsen
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Post by arsen » Wed Apr 13, 2005 5:28 am

poczytaj sobie o app-admin/sudo
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grzewho
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Post by grzewho » Thu Apr 14, 2005 9:03 pm

a tak z ciekawości to jak chmod/chown czy nawet sudo da radę z ctrl-alt-del ?

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USE="freedom -software_patents" emerge --deep --update world
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psycepa
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Post by psycepa » Thu Apr 14, 2005 9:24 pm

grzewho wrote:a tak z ciekawości to jak chmod/chown czy nawet sudo da radę z ctrl-alt-del ?
nie jestem pewien jak to jest z chmod/chown i sudo, wiem ze aby pozbyc sie ctrl+alt+del ale tak dla wszystkich:) wystarczy w zdaje sie /etc/inittab zmienic linijke:

Code: Select all

# What to do at the "Three Finger Salute".
ca:12345:ctrlaltdel:/sbin/shutdown -r now 
i zmienic /sbin/shutdown na np /dev/null czy cos w ten desen :)
RLUNo. 376073
bo czytac, to trzeba ze zrozumieniem (c) by psycepa
"nigdy nie kloc sie z glupcem, najpierw sprowadzi cie do swojego poziomu a potem pokona doswiadczeniem"
"Life is complex. It has its real and imaginary part."
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grzewho
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Post by grzewho » Thu Apr 14, 2005 9:54 pm

dobra dobra. to żadna nowość, powiedz jak przyblokować to hasłem. ciekawy topic btw

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USE="freedom -software_patents" emerge --deep --update world
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kontomen
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Post by kontomen » Fri Apr 15, 2005 12:37 am

Możesz

Code: Select all

# What to do at the "Three Finger Salute".
ca:12345:ctrlaltdel:/sbin/shutdown -r now
zmienić na jakiś swój skrypcik np.:

Code: Select all

# What to do at the "Three Finger Salute".
ca:12345:ctrlaltdel:/sbin/skrypcik.sh
.
W 'skrypcik.sh' możesz napisać:

Code: Select all

#!/bin/sh
shutdown -r now
i dać skrypcikowi bit SUID albo dopisać linijkę w sudo...
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marwooj
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Post by marwooj » Fri Apr 15, 2005 9:31 am

kontomen wrote:Możesz

Code: Select all

# What to do at the "Three Finger Salute".
ca:12345:ctrlaltdel:/sbin/shutdown -r now
zmienić na jakiś swój skrypcik np.:

Code: Select all

# What to do at the "Three Finger Salute".
ca:12345:ctrlaltdel:/sbin/skrypcik.sh
.
W 'skrypcik.sh' możesz napisać:

Code: Select all

#!/bin/sh
shutdown -r now
i dać skrypcikowi bit SUID albo dopisać linijkę w sudo...
Sorcia ale linux ignoruje bit SUID dla skryprów.
erp |
genetic anticipatory |
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kontomen
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Post by kontomen » Fri Apr 15, 2005 7:40 pm

No to można napisać prościutki programik w C :D :

Code: Select all

int main(void) {
exec('shutdown -r now');
return 0;
}
:lol: :lol: :lol: :lol: :lol:

P.S. Jeśli ignoruje bit SUID to zawsze jest sudo... Zresztą to nawet jest bardziej eleganckie rozwiązanie...
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