is there really no standard UNIX filter that act likes "probabilistic cat", outputing one line or not with a given probability? (yes, i know it can be emulated with awk/perl oneliners, but still)
oh gawd, it just occurred to me, it should be called… wait for it… "stocat"
#961638 - proposal: stocat - probabilistic cat - Debian Bug report logs

My fellow italian-speaking hackers will further appreciate the name. « Lo sai chi ti printa tanto? #STOCAT ! » (quasi-cit.)