ref: 1cf04fdaabf1dbfb7fb4ce59a8cd41a2336d8f18
dir: /bin/bindbins/
f=() for(i in $home/p/^(rc/bin rc2/bin pico sm2/bin notes/bin) $home/bin/^($objtype rc) /sys/lib/go/amd64-1.15.2/bin /usr/ocaml/bin) if(test -e $i) f=($f $i) unionfs -bm /bin $f /rc/bin /$objtype/bin if(test -f $home/p/rc/fn) . $home/p/rc/fn