{"id":50,"date":"2014-04-09T10:58:02","date_gmt":"2014-04-09T08:58:02","guid":{"rendered":"https:\/\/jm.garreta.eu\/blog\/?p=50"},"modified":"2014-04-09T11:16:35","modified_gmt":"2014-04-09T09:16:35","slug":"supprimer-de-maniere-definitive-et-sans-trace-vos-donnees-sous-linux","status":"publish","type":"post","link":"https:\/\/jm.garreta.eu\/blog\/supprimer-de-maniere-definitive-et-sans-trace-vos-donnees-sous-linux\/","title":{"rendered":"Supprimer de mani\u00e8re d\u00e9finitive et sans trace vos donn\u00e9es sous Linux"},"content":{"rendered":"

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

En ces p\u00e9riodes de confidentialit\u00e9 de donn\u00e9es (voir article pr\u00e9c\u00e9dent<\/a>), il est conseill\u00e9 quand vous avez des donn\u00e9es sensibles de les supprimer de mani\u00e8re s\u00e9curis\u00e9e<\/strong> (non mettre dans la corbeille n’est pas supprimer un fichier, et vider la corbeille n’est pas non plus la mani\u00e8re d\u00e9finitive de supprimer un fichier).
\nJe donne un exemple simple mais efficace de supprimer un fichier sous Linux avec la commande shred<\/em> install\u00e9e de base sous Debian (certainement disponible sur les autres distributions).<\/p>\n

shred -n 7 -u -z <nom du fichier><\/code><\/p>\n

Eh oui tout b\u00eatement, alors pourquoi s’en priver ?<\/p>\n

-n 7<\/em> : r\u00e9\u00e9crit 7 fois des donn\u00e9es dans le fichier (par d\u00e9faut 3, mais on n’est jamais trop prudent, 7 me semble un bon compromis)
\n-u<\/em> : supprime le fichier \u00e0 la fin des r\u00e9\u00e9critures
\n-z<\/em> : termine le processus avant la suppression par remplir le fichier de 0 pour masquer la manipulation<\/p>\n

Cette commande me prend moins de 10 minutes pour un fichier de 7.4 Go pour 7 passes, donc rien d’alarmant et on peut s’en servir sans risquer de perdre une journ\u00e9e.<\/p>\n

Les plus curieux peuvent rajouter un -v<\/em> pour afficher la progression.<\/p>\n","protected":false},"excerpt":{"rendered":"

En ces p\u00e9riodes de confidentialit\u00e9 de donn\u00e9es (voir article pr\u00e9c\u00e9dent), il est conseill\u00e9 quand vous avez des donn\u00e9es sensibles de les supprimer de mani\u00e8re s\u00e9curis\u00e9e (non mettre dans la corbeille n’est pas supprimer un fichier, et vider la corbeille n’est pas non plus la mani\u00e8re d\u00e9finitive de supprimer un fichier). Je donne un exemple simple … Continuer la lecture de Supprimer de mani\u00e8re d\u00e9finitive et sans trace vos donn\u00e9es sous Linux<\/span> →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"blog_gen_system_prompt":"","blog_gen_user_prompt":"","blog_gen_featured_img_prompt":"","blog_gen_inline_img_prompts":"","blog_gen_model":"","blog_gen_image_model":"","blog_gen_timestamp":"","blog_gen_type_article":"","blog_gen_longueur_cible":"","footnotes":""},"categories":[3],"tags":[11,10,14],"class_list":["post-50","post","type-post","status-publish","format-standard","hentry","category-informatique","tag-linux","tag-serveur","tag-shred"],"yoast_head":"\nSupprimer de mani\u00e8re d\u00e9finitive et sans trace vos donn\u00e9es sous Linux - Le blog de Jean-Mich<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/jm.garreta.eu\/blog\/supprimer-de-maniere-definitive-et-sans-trace-vos-donnees-sous-linux\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Supprimer de mani\u00e8re d\u00e9finitive et sans trace vos donn\u00e9es sous Linux - Le blog de Jean-Mich\" \/>\n<meta property=\"og:description\" content=\"En ces p\u00e9riodes de confidentialit\u00e9 de donn\u00e9es (voir article pr\u00e9c\u00e9dent), il est conseill\u00e9 quand vous avez des donn\u00e9es sensibles de les supprimer de mani\u00e8re s\u00e9curis\u00e9e (non mettre dans la corbeille n’est pas supprimer un fichier, et vider la corbeille n’est pas non plus la mani\u00e8re d\u00e9finitive de supprimer un fichier). 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