Author Archives: Ahmed Tawfik

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About Ahmed Tawfik

Cybersecurity Professional, Systems Engineer, OSS & Linux Geek

Capslock Indicator in Ubuntu

Posted on December 30, 2009 by Ahmed Tawfik

Very useful if you don’t have a led on your laptop indicating whether the caps lock key is turned on or off: “sudo apt-get install lock-keys-applet” “killall gnome-panel” Right click the panel, click “Add to panel” and then choose the … Continue reading →

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Access shared-folder in Ubuntu host from Ubuntu guest in Virtualbox

Posted on December 29, 2009 by Ahmed Tawfik

This is the scenario that you run Ubuntu as your host operating system and Ubuntu guest in VirtualBox, and that you want to access a specific folder from Ubuntu host. First you have to make sure that have install Guest … Continue reading →

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A complete invisibility – anonymity – solution for Ubuntu

Posted on December 28, 2009 by Ahmed Tawfik

Based on some online articles and my previous posts, I created the following script which does the following: Generates and assigns a random MAC address to my wired card (eth0) and wireless card (wlan0) using the macchanger software described here … Continue reading →

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Delete the last line in a text file using sed

Posted on December 28, 2009 by Ahmed Tawfik

sed -i ‘$d’ hobba -i: to change the file itself, not copy contents to another file or something$d: delete the last linehobba: the file name

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Insert a "new line" character in a text file using Bash

Posted on December 28, 2009 by Ahmed Tawfik

“echo -e “192.168.100.100\n192.168” >> hobba“  The ‘-e’ option does the magic, as it allows escape characters to be printed Source

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