Nov 042012
 

At the base of these articles there is a simple fact: a simple rm of a file or deleting it via any file manager is not enough to really remove it from your hard disk.

If you really want to delete files from a computer you have to use more sophisticated commands, and in former articles we have seen:

Dban: Darik’s Boot and Nuke (commonly known as DBAN) is an open source project hosted on SourceForge. The program is designed to securely erase a hard disk until data is permanently removed and no longer recoverable, which is achieved by overwriting the data with random numbers generated by Mersenne twister or ISAAC (a PRNG).

Shred : Overwrites the specified FILE(s) repeatedly, in order to make it harder for even very expensive hardware probing to recover the data.

Wipe : Wipe is a secure file wiping utility.

Today we’ll take a look at the package secure-delete that contains some useful programs to delete in a safer way files, memory, free space and/or the Swap space. Continue reading »

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Apr 262011
 

hard-diskAs system administrator , but also as common user on my PC, one of the more common problem is when a file system got filled up at up at 100% of its size.
So, in this article we’ll see 2 commands that can help us in keeping under control or check the space used in every filesystem and in his directory.

df : report file system disk space usage

du: estimate file space usage Continue reading »

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