The Pipe Magic Tools (PMT) are a small collection of filters which
can be added to UNIX pipes. The filters include:
speed
Measures the speed of the data flowing through the pipe
throttle
Controls the speed of the data flowing through the pipe
rot13
The famous rot13 algorithm
rot47
The not-so-famous rot47 algorithm
tolower
Converts all alphabetic characters to lower case
toupper
Converts all alphabetic characters to upper case