tapbpm was written to provide a quick, command line bpm tap-tempo utility.
It is used by cdj_mode to set bpm. It also functions as a standalone program.
Run the program, and press the Enter key at regular intervals. tapbpm will use the average of these intervals and convert it to bpm.
Example output:
~ $ tapbpm
Tap!
Tap!
146.71
146.38
146.28
146.94
148.51
148.55
147.79
^C
~ $