ifconfig <interface> <ip> netmask <netmask>
assigning an IP to given interface with given netmask.

route add default gw <ip> <interface>
set ip as gateway for given interface.

In suse 10, when users want to change their password with passwd from client machines, they encounter "password truncated to 8 char", to ingnore this, you can change /etc/security/pam_pwcheck.conf entry from

password: nullok
to
password: nullok minlen=8 blowfish

for more information please read man 8 pam_pwcheck.

In suse 10, when users want to change their password with passwd from client machines, they encounter "password truncated to 8 char", to ingnore this, you can change /etc/security/pam_pwcheck.conf entry from

password: nullok
to
password: nullok minlen=8 blowfish

for more information please read man 8 pam_pwcheck.

To redirect stderr and stdout to less do:

<your command> 2>&1 | less

I did not any way to only redirect stderr to less? If you know how can
do that please help me.

Thanks.

To remove a package with all of its config files use:

apt-get remove --purge <package-name>

Thank you mebrahim.