Learn Linux BackTrack

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Username root password toor > "default" user pada backtrack, saran ane setelah login langsung ganti password dengan command
root@bt:~# passwd
kemudian masukkan password baru

     Memperbaiki tampilan splash:

root@bt:~# fix-splash

     Memulai (Desktop GUI)

root@bt:~# startx

     networking

root@bt:~# /etc/init.d/wicd start
lalu klik :
menu > internet > wicd netwok manager

setting ip dynamic,
root@bt:~# dhclient
-- interface disini bisa saja eth0 atau eth1

Setting IP static
misalnya :
interface - eth0
IP Address - 172.164.1.9/24
Default Gateway - 172.164.1.1
DNS server - 172.164.1.1
maka perintah yang digunakan adalah :

root@bt:~# ifconfig eth0 171.164.1.9/24
root@bt:~# route add default gw 192.164.1.1
root@bt:~# echo nameserver 172.164.1.1 > /etc/resolv.conf

settingan ini akan kembali default bila di reboot, untuk menjadikan permanen maka kita perlu meng-edit file /etc/network/interfaces,

root@bt:~# nano /etc/network/interfaces

auto eth0
iface eth0 inet static
address 172.164.1.9
netmask 255.255.255.0
network 172.164.1.0
broadcast 172.164.1.255
gateway 172.164.1.1

kemudian save dengan menggunakan perintah CTRL+X kemudian jawab y kemudian enter

root@bt:~# update-rc.d networking defaults
root@bt:~# /etc/init.d/networking restart

     Memulai service di BT :

SSH (Secure Shell)
root@bt:~# sshd-generate
root@bt:~# /etc/init.d/ssh start
Starting OpenBSD Secure Shell server: sshd.

untuk menghentikan service :
root@bt:~# /etc/init.d/ssh stop
Stopping OpenBSD Secure Shell server: sshd.
apache webserver
root@bt:~# /etc/init.d/apache2 start
atau bisa jg dengan perintah

root@bt:~# service apache2 start
* Starting web server apache2

atau :
root@bt:~# apache2ctl start

untuk menghentikan service :

root@bt:~# /etc/init.d/apache2 stop

atau :
root@bt:~# service apache2 stop

atau :
root@bt:~# apache2ctl stop
MySQL
untuk memulai bisa menggunakan perintah :
root@bt:~# /etc/init.d/mysql start

atau:
root@bt:~# start mysql

untuk menghentikan :
root@bt:~# /etc/init.d/mysql stop

atau :

This method of installation is the simplest available. The assumption is that the whole hard drive is going to be used for BackTrack.

1. Boot BackTrack on the machine to be installed. Once booted, type in “startx” to get to the KDE graphical interface.
2. Double click the “install.sh” script on the desktop, or run the command “ubiquity” in console.
3. Select your geographical location and click “forward”.  Same for the Keyboard layout.
4. The next screen allows you to configure the partitioning layout. The assumption is that we are deleting the whole drive and installing BackTrack on it.
5. Accept the installation summary and client “Install”. Allow the installation to run and complete. Restart when done.
6. Log into BackTrack with the default username and password root / toor. Change root password.
7. Fix the framebuffer splash by typing “fix-splash” ( or “fix-splash800″ if you wish a 800×600 framebuffer), reboot.

The following tips deal with the use of tar, gzip, bzip2 and zip

make a tarball of certain types of files
You can make a tarball of only certain types of files from a directory with the following one-liner:

find reports/ -name "*.txt" | xargs tar -zcpf reports.tar.gz

Change the compression type to bzip2 and you'll have a smaller file:

find reports/ -name "*.txt" | xargs tar -jcpf reports.tar.bz2

untar in a different directory
If you've got a gzipped tarball and you want to untar it in a directory other than the one you're in, do the following:

zcat file.tar.gz | ( cd ./otherdir; tar xvf - )

extract individual files from a tarball
If you need a file that you've put into a tarball and you don't want to extract the whole file, you can do the following.
First, get a list of the files and find the one you want

tar -zltf file.tar.gz

Then extract the one you want

tar zxvf file.tar.gz indiv.file

backup everything with tar
To make a backup of everything in a particular directory, first do this

ls -a > backup.all

If you don't really want *everything*, you can also edit backup.all and get rid of things you don't want
To make the tarball, just do this:

tar -cvf newtarfile.tar `cat filelist`

(remember, those are backtics)


incremental backups with tar
An incremental backup is one that includes the new files you've created each day. First you need create a tarball with everything, as we did in the previous example, or just by creating a tarball of the entire directory.

tar cvzf homedir-complete.tar.gz /home/homedir/

Then, you can run the following as a cron job every day. It will add the new files to the homedir-complete.tar.gz tarball

find /home/homedir -mtime -1 -print |  
tar cvzf homedir_complete.tar.gz -T -

(don't forget that dash '-' at the end!)


zip syntax
Most Linux distributions come with zip, the most popular file compression format in the MS Windows world. The command line arguments are not the same as when you're creating a tar.gz, however. To create a zipped file on Linux, do this:

zip -b ./ file.zip *.png

This would create a zipped file of all the *.pngs in that particular directory. Keep in mind:

• "./" means the directory you're in

• As you can see, you can use wildcards and extension names

tar and untar over ssh
You can use tar combined with ssh to move files more easily over a local network or even the Internet. In the following example, we will take our 'development' web work and transfer them to the production server.

tar cf - *.png | ssh -l username production_server  
"( cd /home/website/html/images/ ; tar xf - ) "

The process can also be reversed to get remote files here.

ssh -l username production_server
"( cd /path/to/files; tar cf - *.png ) " | tar xf