# cpu:
cat /proc/cpuinfo
# disks:
df -h
sudo /sbin/fdisk -l
/usr/sbin/vgdisplay
/usr/sbin/lvdisplay
sudo /sbin/hdparm -tT /dev/sda
# devices:
sudo /sbin/lsusb
sudo /sbin/lspci
# memory
vmstat

/usr/sbin/useradd username -G wheel
 
vi /etc/sudoers
# uncomment line "# %wheel        ALL=(ALL)       ALL"
# :w! and :q for saving changes and exit
 
# creating password:
passwd username
 
# login as user:
su - username
 
# ssh:
ssh-keygen
vi .ssh/authorized_keys2 # adding my public key here
 
chmod 600 .ssh/authorized_hosts2

# Change root's password (usually OS are being installed by vendor or datacenter admins)
sudo passwd root
 
# Change hostname:
vi /etc/sysconfig/network

sudo yum update

sudo rpm -Uvh http://download.fedora.redhat.com/pub/epel/5/i386/epel-release-5-3.noarch.rpm
sudo yum update

sudo yum install htop screen

sudo vi /etc/profile.d/env.sh
# Add:
#  PATH=/sbin:/usr/sbin/:$PATH
#  export PATH
. /etc/profile
echo $PATH

sudo yum -y install postfix
sudo /etc/init.d/sendmail stop
sudo /etc/init.d/postfix start
sudo yum -y remove sendmail

sudo vi /etc/aliases # add alias "root: <my@e.mail>"
sudo newaliases
echo "hello from `hostname`" | mail -s "test" root

sudo vi /etc/selinux/config

sudo vi /etc/inittab
# comment "x:5:respawn:/etc/X11/prefdm -nodaemon"
sudo init q

sudo ntsysv

sudo reboot && exit