03-22-2013
How do I wipe stdout?
Today I used Terminal (invoked from Mac OS X 10.4.11) to view some data that is secured by a password.
After exiting Terminal, it occurred to me that a vestige of the data displayed on my screen might reside in memory or in disk file ... the actual file used for stdout, for example.
Do I need to take precautions to prevent the the temporary perusal of sensitive data from creating an image that hangs around after I exit, or is Unix pretty good about wiping the slate clean when I exit?
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LEARN ABOUT DEBIAN
u3-tool
u3-tool(1) General Commands Manual u3-tool(1)
NAME
u3-tool - Tool for controlling the special features of an U3 USB Flash disk.
SYNOPSIS
u3-tool [-cdDehiRuvV] [-l cd image ] [-p cd size ] device
DESCRIPTION
This tool can be used to control some of the special features of U3 Flash disks.
OPTIONS
-c Change current password.
-d Disable device security leaving the data intact. The current password is required to perform this command. WARNING: this makes all
current data files AND possibly also deleted data public.
-D Dump all raw info(for debug)
-e Enable device security, protecting all files currently on the data partition using a password.
-h Print a short help message.
-i Display device information.
-l <cd image>
Load a new CD image into the cd partition of the device. Make sure the cd partition is big enough to contain the file. Else you'll
have to repartition the device using the '-p' option.
-p <cd size>
Repartition device, reassinging the device space between the cd and data partition. The argument specifies the size of the CD parti-
tion. The rest of the device will be assigned to the data partition. The data partition needs reformating after this command has
been issued.
-R Reset device security destroying private data. This can be used if the device is blocked or the password is lost.
-u Unlock secured data partition. This requires the current password.
-v Use verbose output
-V Print version information
u3-tool(1)