Author Archives: Ahmed Tawfik

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About Ahmed Tawfik

Cybersecurity Professional, Systems Engineer, OSS & Linux Geek

How to check which ps is keeping nfs mount busy

Posted on April 4, 2016 by Ahmed Tawfik

sudo fuser -c /mount_point It will give an output like: /mount_point: 25422c then ps for the number before c That’s it! Enjoy!

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How to restart OpenVPN Service on CentOS 7

Posted on April 4, 2016 by Ahmed Tawfik

systemctl restart openvpn@server.service

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Bypass Code Integrity Checking in ownCloud 9

Posted on March 22, 2016 by Ahmed Tawfik

This is an added security feature in ownCloud 9 to sign all the changes to avoid malicious code or files in ownCloud releases. However, due to a bug in ownCloud 9.0.0, this message appears by mistake when installing some official … Continue reading →

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How to force usage of DNS name instead of IP in ownCloud

Posted on March 20, 2016 by Ahmed Tawfik

Sometimes when sharing a link in owncloud, especially on the mobile and desktop clients, the links are using the IP address instead of the DNS name. This behavior can be changed by using the overwritehost parameter in the config.php file … Continue reading →

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How to mount a file created using dd command

Posted on March 17, 2016 by Ahmed Tawfik

I created an exact copy of a bootable USB drive using the dd command (which is an extremely cool tool by the way) using the following command: dd if=/dev/sdb of=myFile.img After that, to mount it, you can simply use the … Continue reading →

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