Refactor utilities in the base system, such as netstat, top, and vmstat, that format & display tables of statistics.
One possible refactoring divides each program into three:
- one program reads the statistics from the kernel and writes them in machine-readable form to its standard output
- a second program reads machine-readable tables from its standard input and writes them in a human-readable format to the standard output
- and a third program supervises a pipeline of the first two programs, browses and refreshes a table.
Several utilities will share the second and third program.