Purpose

With no argument, show the currently amount of primary mirror
focus mode. With a argument, set the amount of primary mirror
focus mode to the specified number of nanometers.

Usage

pmfm [x]

Arguments

x = amount of "focus mode" to introduce [nanometers]

Exit values

0 = normal completion
1 = wrong number of arguments

Example

1) show the current amount of pmfm

pmfm

2) apply 500 nm of primary mirror focus mode

pmfm 500

3) make pmfm change in background

pmfm 500 </dev/null &