World Wide Kali

In this blog post we are gonna go throw all the basic commands line to get started with kali linux, those commands will help you interact with the system easily and teach you to use the command prompt more offten then the grafical interface of kali linux .

1. Command: ls

The command “ls” stands for (List Directory Contents), List the contents of the folder, be it file or folder, from which it runs.

The command “ls -l” list the content of folder, in long listing fashion.

Command “ls -a“, list the content of folder, including hidden files starting with ‘.’.

root@tecmint:~# ls
Android-Games                     Music
Pictures                          Public
Desktop                           Tecmint.com
Documents                         TecMint-Sync
Downloads                         Templates

2. Command: lsblk

The “lsblk” stands for (List Block Devices), print block devices by their assigned name (but not RAM) on the standard output in a tree-like fashion.

The “lsblk -l” command list block devices in ‘list‘ structure (not tree like fashion).

Note: lsblk is very useful and easiest way to know the name of New Usb Device you just plugged in, especially when you have to deal with disk/blocks in terminal.

root@tecmint:~# lsblk
NAME   MAJ:MIN RM   SIZE RO TYPE MOUNTPOINT
sda      8:0    0 232.9G  0 disk 
├─sda1   8:1    0  46.6G  0 part /
├─sda2   8:2    0     1K  0 part 
├─sda5   8:5    0   190M  0 part /boot
├─sda6   8:6    0   3.7G  0 part [SWAP]
├─sda7   8:7    0  93.1G  0 part /data
└─sda8   8:8    0  89.2G  0 part /personal
sr0     11:0    1  1024M  0 rom

3. Command: md5sum

The “md5sum” stands for (Compute and Check MD5 Message Digest), md5 checksum (commonly called hash) is used to match or verify integrity of files that may have changed as a result of a faulty file transfer, a disk error or non-malicious interference.

root@tecmint:~# md5sum teamviewer_linux.deb 
47790ed345a7b7970fc1f2ac50c97002  teamviewer_linux.deb

4. Command: dd

Command “dd” stands for (Convert and Copy a file), Can be used to convert and copy a file and most of the times is used to copy a iso file (or any other file) to a usb device (or any other location), thus can be used to make a ‘Bootlable‘ Usb Stick.

root@tecmint:~# dd if=/home/user/Downloads/debian.iso of=/dev/sdb1 bs=512M; sync

5. Command: uname

The “uname” command stands for (Unix Name), print detailed information about the machine name, Operating System and Kernel.

root@tecmint:~# uname -a
Linux tecmint 3.8.0-19-generic #30-Ubuntu SMP Wed May 1 16:36:13 UTC 2013 i686 i686 i686 GNU/Linux

6. Command: history

The “history” command stands for History (Event) Record, it prints the history of long list of executed commands in terminal.

root@tecmint:~# history
1  sudo add-apt-repository ppa:tualatrix/ppa
2  sudo apt-get update
3  sudo apt-get install ubuntu-tweak
4  sudo add-apt-repository ppa:diesch/testing
5  sudo apt-get update
6  sudo apt-get install indicator-privacy
7  sudo add-apt-repository ppa:atareao/atareao
8  sudo apt-get update
9  sudo apt-get install my-weather-indicator
10 pwd
11 cd && sudo cp -r unity/6 /usr/share/unity/
12 cd /usr/share/unity/icons/
13 cd /usr/share/unity

7. Command: sudo

The “sudo” (super user do) command allows a permitted user to execute a command as the superuser or another user, as specified by the security policy in the sudoers list.

root@tecmint:~# sudo add-apt-repository ppa:tualatrix/ppa

Note: sudo allows user to borrow superuser privileged, while a similar command ‘su‘ allows user to actually log in as superuser. Sudo is safer than su.

8. Command: mkdir

The “mkdir” (Make directory) command create a new directory with name path. However is the directory already exists, it will return an error message “cannot create folder, folder already exists”.

root@tecmint:~# mkdir tecmint

9. Command: touch

The “touch” command stands for (Update the access and modification times of each FILE to the current time). touch command creates the file, only if it doesn’t exist. If the file already exists it will update the timestamp and not the contents of the file.

root@tecmint:~# touch tecmintfile

10. Command: chmod

The Linux “chmod” command stands for (change file mode bits). chmod changes the file mode (permission) of each given file, folder, script, etc.. according to mode asked for.