disk_wiper

a disk wiper since shred is "lentoinculo" on some machines,

the old machine has achieved a ~100MB/s instead of shred's ~10MB/s

features:

• checks if disk has errors, in that case instructs you to physically destroy it poiting to the Model and Serial numbers to best identify the drive
• checks if disk is an SSD (see TODO) and reminds you the dangers of SSD's flash reallocation
• differentiate between SAS and SATA to retrieve the correct data
• uses openssl to provide randomness (faster)
• has a nice progress bar for the shredding and zeroing with timing of the current operation
• automatically installs it's prerequisites (pv, smartmontools and hdparm)

TODO:

• check ATA Secure Erase for SSDs
• needs testing with SATA drives
• needs testing with broken SATA drives
• needs testing with SSDs
• broaden the platforms for prerequisites installation (at least yum)