<p>For a load test of my application (under Linux), I'm looking for a tool that outputs data on stdout at a specific rate (like 100 bytes/s), so that I can pipe the output to netcat which sends it to my application. Some option for dd would be ideal, but I didn't find anything so far. It doesn't really matter what kind of data is printed (NUL bytes are OK). Any hints?</p>

If you're fine with getting all hundred bytes at a time, you could do a loop with
```
sleep
```
and plain old
```
echo
```
in the shell as a first attempt at least.