Lilt is a little library (and tool) to copy input data to output on a regular interval
Lilt command line tool copies stdin data to sdtout data on a regular interval.
$ go get github.com/squioc/lilt/cmd/lilt
As a terminal,
$ lilt [--period <period>]
with <period> the number of milliseconds between each line copy.
When Lilt is a terminal, it generates a new line at each period until SIGINT (CTRL+C) is catched.
As reading the output of another program,
$ cat test.txt | lilt [--period <period>]