To get the command line for any G’MIC-Qt filter, you can go to Settings
and select this option:
i.e Output messages
→ Verbose (layer name)
.
Then apply the filter with the desired parameters. The corresponding G’MIC command line will be displayed as the name of the processed layer.
For the Smooth Skin
filter, you’ll get something as:
[G'MIC] Smooth [Skin]: fx_smooth_skin 2,0.5,1,1,1,50,50,5,2,0.2,3,1,0.05,5,0,50,50
meaning, the equivalent command line is:
$ gmic input.png fx_smooth_skin 2,0.5,1,1,1,50,50,5,2,0.2,3,1,0.05,5,0,50,50 -o output.png