mount windows share folder

1.create mount point
#sudo mkdir /media/windows

2.mount point to /media/windows
#sudo mount -t cifs -o username=superman,password=super123 //172.16.1.1/share /media/windows

ssh in debug mode

1.Use command to ligin debug mode with ssh server
#/usr/sbin/sshd -d
notice the sshd must be absolute path
it will show
debug1: sshd version......
debug1: read PEM Private key done.......
debug1: Checking blacklist file /usr/share/ssh.......
debug1: Checking blacklist file /etc/ssh/blacklist.......
debug1: private host key: #0 type 1 Rsa.....

check sshd syntax error

1.Run command to check syntax error
#sshd -t
if error occur, it will show message like below
/etc/ssh/sshd_config: line 1: Bad configuration option: Package
/etc/ssh/sshd_config: terminating, 1 bad configuration options

2.modify line error and run the command again
#sshd -t

Use ssh method

1.Connect remote host use ssh login
#ssh -l tommy 192.168.1.38
#ssh tommy@192.168.1.38

2.accept authicate
3.enter your password for login user tommy

install ldaptools

1.Install ldap command tools
#sudo apt-get install ldap-utils

install webmin

1.Get web deb package of ubuntu jaunty
#wget http://nchc.dl.sourceforge.net/sourceforge/webadmin/webmin_1.470_all.deb

2.Install webmin package
#dpkg -i webmin_1.470_all.deb
it will show some package lose

3.Fixed the dependence for webmin package
#sudo apt-get -f install

4.Confirm webmin web site status
http://localhost:10000

create iso image from cd, dvd, scsi

1.create iso image from dvd
dd if=/dev/dvd of=dvd.iso

2.create iso image from cd
dd if=/dev/cdrom of=cd.iso

3.create iso image from scsi
dd if=/dev/scd0 of=cd.iso

mount mdf image

1.Making a mount point
#sudo mkdir /media/mdf

2.mount mdf image
#sudo mount silver.mdf /media/mdf -o loop

install openvpn

1.Install openvpn and bridge module
#sudo apt-get install openvpn bridge-utils