gistfile1.sh-session

$ cat ~/title.inm | sort | uniq | grep '\..*$' | sed -e "s/.*\(\..*\)$/\1/g" | sort | uniq -c | sort -r | head
 241 .mp4
  17 .mp893
   7 .mp810
   7 .exe
   6 .
   4 .mp3
   4 .ksp
   3 .pdf
   3 .ntuy
   3 .mp5

title_inm.sh

#!/bin/bash

for i in `seq 0 100 1500`
do
    query="{\"query\":\"真夏の夜の淫夢\",\"service\":[\"video\"],\"search\":[\"tags\"],\"join\":[\"cmsid\",\"title\",\"view_counter\"],\"from\":${min},\"size\":${max},\"sort_by\":\"view_counter\",\"issuer\":\"apiguide\",\"reason\":\"ma10\"}"
    curl -s "Accept: application/json" -H "Content-type: application/json" -X POST -d ${query} http://api.search.nicovideo.jp/api/ | jq -r .values[].title 2>/dev/null >>~/title.inm
    if [ ${i} -eq 0 ]; then
        min='0'
    else
        min=`expr ${i} + 1`
    fi
    sleep 60
done