Author Archives: Ahmed Tawfik

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About Ahmed Tawfik

Cybersecurity Professional, Systems Engineer, OSS & Linux Geek

How to to prevent the screen from turning off when locked with gnome-shell on Ubuntu 18.04

Posted on April 16, 2018 by Ahmed Tawfik

This annoys me a lot, as whenever I lock the screen, my big screen turns off and it is an old slow screen that takes a few seconds to turn on again. To disable this behavior, do the following: Download … Continue reading →

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Use 7z to compress & encrypt zip files

Posted on April 4, 2018 by Ahmed Tawfik

7z a -tzip -mem=AES128 -bd -y -pPASSWORD -mx=0 — OUTPUT_FILE.zip file1 file2 file3 file3 This uses AES128 encryption and uses a compression rate of 0 (archive mode). You can pick a number up to 9 (highest compression rate) Enjoy!

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A tiny script to replace all occurrences of a string in a file with another string

Posted on March 29, 2018 by Ahmed Tawfik

sed -i ‘s/original/new/g’ filename.txt This basically replaces every occurrence of the “original” string with the “new” string in the file named “filename.txt” e.g. sed -i ‘s/192.168.0.1/192.168.1.1/g’ /etc/fstab Will replace all occurrences of the IP “192.168.0.1” with the IP “192.168.1.1” in … Continue reading →

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My favorite drop-down terminal for Linux

Posted on March 29, 2018 by Ahmed Tawfik

It’s Tilda! My previous best was Guake, but it’s having compatibility issues and not maintained frequently like this one. sudo apt install tilda Very customizable and has a lot of options, including position, colors, scroll bars and transparency. Tested on Ubuntu … Continue reading →

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How to connect to your MS Exchange Account (Mail, Contacts, Calendar…etc) from Linux

Posted on March 28, 2018 by Ahmed Tawfik

Just go to Online Accounts -> Microsoft Exchange -> Type your e-mail and password! This basically connects using Exchange Web Services (EWS). If this doesn’t work out with you, click on custom and enter your username and server. I had … Continue reading →

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