ref: 6ad06b36b2a61ce20cb6a6e4c5fd15ec8ac142f8
dir: /sys/src/cmd/dict/getneeds/
#!/bin/rc
for (x in spec tag aux status) {
grep ' '^$x^' ' $1 > junk1
sort +4 -5 +3n -4 junk1 > junk2
awk '{if ($5 != prev) print $0; prev = $5}' junk2 > junk3
sort -n +2 -3 junk3 > need$x
rm junk*
}