ref: 8499401ada316f99d5ea8ef058ca1669468e6a7a
dir: /sys/lib/man/secindex/
#!/bin/rc builtin cd $1 for (i in [a-z0-9:]*) { sed -n ' /SH *NAM/,/SH/{ /SH/d s/, *$// ty :y s/(^| * )\\*-.*// tx s/ *\\\(mi.*// tx s/, */\ /g s/\n\\n/\ /g s/$/ '$i'/g p } /SH *DES/q d :x s/(^| * )\\*-.*// s/ *\\\(mi.*// /^$/d s/, */\ /g s/\n\n/\ /g s/$/ '$i'/g p q ' $i echo $i $i } |sort -u