shred and dd available, but not srm etc I want to remove the user account info before the device is returned, but dont want to cripple the device. Filesystem is ext3 with default mount options, which implies its mounted with the default data=ordered, and according to the docs "In both the data=ordered (default) and data=writeback modes, shred works as usual"
Would these steps be effective? - set root pw back to installation default - manually create copies of passwd and shadow (named passwd2 shadow2, NOT by copying files then deleting extra lines) containing only the default installation entries - shred /etc/passwd /etc/shadow - mv passwd2 and shadow2 to passwd and shadow - dd if=/dev/zero of=/blah (to blank all spare blocks on fs, dd will bail out once full. Will it miss info from non-fully allocated blocks?) - rm /blah
