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Category Archives: Linux

How to Flush DNS.

If you are running into a lot of “Page Not Found” errors and you know you’re connected to the internet, try flushing your DNS cache to have your computer request new information. Open the command prompt and type ipconfig /flushdns and press key Enter. Because most of computers that are connected to the internet automatically […]

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Fix Bash vulnerability under Linux OS .

If some Bash code outside of the curly brace then it will then be executed by the linux system.

If your system is vulnerable, it will then output:

How Do You Fix It ? Just open up a terminal, and type:

or under Fedora with :

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Calibre – best application to read your books.

I wrote about this application because I used often when I read books, programming books or documentation Calibre is an open source e-book tool that allows you to: organize your e-book library convert e-books to various formats interact with your e-book reader Library Management E-book conversion Syncing to e-book reader devices Downloading news from the […]

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Sort files with ls by last modified date and time.

The ls –help told us : -t sort by modification time, newest first You need to pass the -t option to the ls command to sort by time modified.

Also if you want to reverse the order of the sort then use -r option.

Let see one example:

with iso time style […]

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How to convert mkv file into avi file format with ffmpeg.

This is very simple. You need to use ffmpeg tool. If your file is named my_file.mkv then use this command: ffmpeg -acodec copy -vcodec copy -i my_file.mkv out_file.avi The output will be out_file.avi with directly copy the audio and video streams from the mkv to an avi .

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