Author Archives: Ahmed Tawfik

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About Ahmed Tawfik

Cybersecurity Professional, Systems Engineer, OSS & Linux Geek

How to cut video and audio without re-encoding using ffmpeg

Posted on March 12, 2018 by Ahmed Tawfik

ffmpeg -i source_video.mp4 -t 50 -c copy output_video.mp4 This cuts the first 50 seconds of the video named source_video.mp4 and outputs them without any re-encoding to output_video.mp4 Another example for audio files: ffmpeg -i input_file.mp3 -ss 00:00:05 -t 00:00:21 -c copy output_file.mp3 … Continue reading →

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Benchmarking SanDisk Extreme PRO USB Drive

Posted on February 15, 2018 by Ahmed Tawfik

Just received a 128 GB SanDisk Extreme PRO USB 3.1 Solid State Flash Drive. I wanted to check whether its speed really matches what’s advertised of up to 420 MB/s for read and 380 MB/s for write. Benchmark Details Computer … Continue reading →

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How to mount SSHFS from Ubuntu

Posted on February 5, 2018 by Ahmed Tawfik

A more secure alternative to NFS or SAMBA would be to use SSHFS. Besides encrypting the data stream, it has many benefits, among which: Firewall-friendly, since it uses standard SSH ports Supports PKI To mount an SSH filesystem from Ubuntu, … Continue reading →

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Force uninstall Symantec Endpoint Protection from Windows without password

Posted on January 31, 2018 by Ahmed Tawfik

I figured out it would be much easier to just use the CleanWipe utility from here: https://symwisedownload.symantec.com//resources/sites/SYMWISE/content/live/TUTORIALS/124000/HOWTO124983/en_US/CleanWipe3897.zip?__gda__=1517979685_a3d644edaa4bd0b810351c5a6cab2aa6 Enjoy! Source: https://support.symantec.com/en_US/article.HOWTO124983.html

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How to use the ip command to bring up/down the network interface on Linux

Posted on January 21, 2018 by Ahmed Tawfik

The ip command is replacing ifconfig, which is getting deprecated and some distros have already removed it. To bring a network interface down, simply run the following: sudo ip link set enp0s25 down To bring it back up: sudo ip … Continue reading →

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