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dt command lines are similar to the dd program, which is popular on most UNIX systems. It contains numerous options to give the user control of various test parameters.
dt has been used to successfully test disks, tapes, serial lines, parallel lines, pipes, and memory mapped files. In fact, dt can be used for any device that allows the standard open, read, write, and close system calls. Special support is necessary for some devices, such as serial lines, for setting up the speed, parity, data bits, etc.
Available documentation is located in /usr/share/doc/dt-17.55. Sample scripts and config data are installed in /usr/share/dt.