Wednesday, 3 April 2013

Backtrack 5 Commands for Beginners

06:06 By No comments


How to Login in BackTrack
Once the installation of BackTrack is done, the default username and password required to log in are root / toor


How to Open GUI Environment BackTrack
After you are logged in you can start the GUI Environment by issuing the startx command.


How to check IP address

root@bt:~# ifconfig



How to Setup IP Address Manually
root@bt:~# ifconfig eth0 192.168.1.8
root@bt:~# route add default gw 192.168.1.1
root@bt:~# echo nameserver 192.168.1.1 > /etc/resolv.conf


How to Change the Root Password
root@bt:~# passwd Enter new UNIX password: {enter your new password here}
Retype new UNIX password: {enter your new password again}
passwd: password updated successfully
root@bt:~#


How to start services
root@bt:~# /etc/init.d/openvpn start
Starting Virtual private network daemon(s)…
root@bt:~# /etc/init.d/openvpn stop


How to check kernel version
Use the uname -a as show below



Common Apt Commands

apt-get install Downloads and all of its dependencies, and installs or upgrades them.
apt-get remove [--purge] Removes and any packages that depend on it. --purge specifies that packages should be purged.
apt-get update Updates packages listings from the repo, should be run at least once a week.
apt-get upgrade Upgrades all currently installed packages with those updates available from the repo. should be run once a week.
apt-get dist-upgrade [-u] Similar to apt-get upgrade, except that dist-upgrade will install or remove packages to satisfy dependencies.
apt-cache search Searches packages and descriptions for .
apt-cache show Shows the full description of .
apt-cache showpkg > Shows a lot more detail about , and its relationships to other packages.

man apt Will give you more info on these commands as well as many that are in less common usage.

Common dpkg commands

dpkg -i Installs a package file; one that you downloaded manually, for example.
dpkg -c Lists the contents of a .deb file.
dpkg -I Extracts package information from a .deb file.
dpkg -r Removes an installed package named
dpkg -P Purges an installed package named . The difference between remove and purge is that while remove only deletes data and executables, purge also deletes all configuration files in addition.
dpkg -L Gives a listing of all the files installed by . See also dpkg -c for checking the contents of a .deb file.
dpkg -s Shows information on the installed package . See also apt-cache show for viewing package information in the Debian archive and dpkg -I for viewing package information extracted from a .deb file.
dpkg-reconfigure Reconfigures an installed package
man dpkg Will give you more info on these commands as well as many that are in less common usage.

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