Comments on files under Ubuntu security removal tool

Delete files or reformat the disk and does not damage sensitive data, even if deleted these data can be recovered.

Completely remove certain unwanted data is a good thing, but when you delete a financial data, bank account number, password or classification company information but cannot completely remove it very dangerous, this article will explain some of the operating system of the LinuxUbuntu secure delete files in tool. Sred although shred command has some limitations, but the shred command can be very effective to completely remove the file so that the file is difficult or impossible to recover. Shred so thoroughly delete: by using a data model files are repeatedly rewriting in order to achieve the greatest degree of destruction, so even with the high sensitivity of the data recovery equipment is also very difficult to recover the data. Use the RM command to delete the file actually has not damaged data, it was just to destroy a file location of the index so that the file data block can reuse. Therefore, use the RM command to remove files can be very easy to use special equipment or order for recovery, if file release database has not been repeated use. However, if the hard drive is full (HDD), dynamic systems, freeing up space for only a few minutes or a few seconds to recover. Shred statement shred [option (s)] file (s) _or_devices (s) available options-f,--force-change permissions allows to write (if necessary)-n,-iterations = N – override N times instead of the default (25) times-s,--size = N-file shredding for many byte (you can use the suffix such as K, M, C, etc.)-u,-remove-rewritten truncated and remove file-verbose,-v-displays the process-x,-z, a – exact-donotroundfilesizesuptothenextfullblock-zero-addafinaloverwritewithzerostohideshredding-shred standard output – help-show help and exit – version-output version information and exit Shred example 1) the following command can be used to safely remove three folders: file1, file2 and file3: shredfile1file2file32) the following command will remove the first HDD's seventh partition data: shred/dev/da73) can use the following command to wipe you on the first disk in the floppy disk created by the file system path, this command takes 20 minutes to erase "1.44MB" (actually 1440KiB) floppy disk: shred-verbose/dev/d04) If you want to delete the selected partition on the hard disk's data, you can use the following command: shred-verbose/dev/sda5 in Ubuntu's Nautilus menu add sred first in the terminal using the following command to install nautilus-actions packet: sudoaptitudeinstallnautilus-actions now open NautilusActionsConfiguration: System-> open > NautilusActionsConfiguration Preference-and you will see a window like the figure below, click Add. Now enter the following information: Label: Sred Tooltip: shredutilitytosecurelyerasefiles Icon: gtk-dialog-warning Path: sred Parameters:-f-u-v-z% M click Conditions entry, check the "Appearsifselectioncontains" above "Onlyfiles" (you can also select the files and folders), tick the "Appearsifselectionhasmultiplefilesorfolders", click OK. Add after you will see the following window, click Close. Open a Terminal, run the following procedure to update the nautilus: nautilus-q nautilus it will open nautilus window, right-click any file, you can see in the menu on the shred command options.