{"id":26,"date":"2014-04-10T14:36:37","date_gmt":"2014-04-10T12:36:37","guid":{"rendered":"https:\/\/jm.garreta.eu\/blog\/en\/?p=26"},"modified":"2014-04-10T14:36:37","modified_gmt":"2014-04-10T12:36:37","slug":"how-to-definitely-delete-and-without-a-trace-your-data-with-linux","status":"publish","type":"post","link":"https:\/\/jm.garreta.eu\/blog\/en\/26\/how-to-definitely-delete-and-without-a-trace-your-data-with-linux\/","title":{"rendered":"How to definitely delete and without a trace your data with Linux"},"content":{"rendered":"

\"shred\"<\/p>\n

With this data privacy period (see previous article<\/a>), it is recommended, when you have private data, to delete them securely<\/strong> (no! move to trash is not how to delete a file, and empty the trash is not how to delete securely a file).
\nI give a simple but effective example on how to delete a file on Linux with shred<\/em> command installed on Debian (certainly available with other Linux OS).<\/p>\n

shred -n 7 -u -z <file name><\/code><\/p>\n

Yes, so simple, so why do not do that?<\/p>\n

-n 7<\/em> : rewrite 7 times data in the file (default 3, but we are not too careful, 7 seems a good compromise)
\n-u<\/em> : delete the file after rewriting
\n-z<\/em> : fill 0 to hide shredding before deleting the file<\/p>\n

This command take less than 10 minutes for a 7.4 Gb file and 7 pass, so nothing should stop you to do that without losing your day.<\/p>\n

You can add -v<\/em> option to show progress if you are curious.<\/p>\n","protected":false},"excerpt":{"rendered":"

With this data privacy period (see previous article), it is recommended, when you have private data, to delete them securely (no! move to trash is not how to delete a file, and empty the trash is not how to delete securely a file). 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