Backtrack 5 Commands for Beginners (Part 1)

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 <package> Downloads <package> and all of its dependencies, and installs or upgrades them.

apt-get remove [–purge] <package> Removes <package> 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 <pattern> Searches packages and descriptions for <pattern>.

apt-cache show <package> Shows the full description of <package>.

apt-cache showpkg <package> Shows a lot more detail about <package>, 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 <package.deb> Installs a package file; one that you downloaded manually, for example.

dpkg -c <package.deb> Lists the contents of <package.deb> a .deb file.

dpkg -I <package.deb> Extracts package information from <package.deb> a .deb file.

dpkg -r <package> Removes an installed package named <package>

dpkg -P <package> Purges an installed package named <package>. 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 <package> Gives a listing of all the files installed by <package>. See also dpkg -c for checking the contents of a .deb file.

dpkg -s <package> Shows information on the installed package <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 <package> 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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