https://raw.githubusercontent.com/harelba/q/master/bin/q
case：
http://harelba.github.io/q/examples.html
安装和使用：
curl https://raw.githubusercontent.com/harelba/q/master/bin/q>q chmod +x q ./q
输出：
q version 1.6.0notreleasedyet
Copyright (C) 2012-2014 Harel Ben-Attia ([email protected], @harelba on twitter)
http://harelba.github.io/q/
Must provide at least one query in the command line, or through a file with the -q parameter
例子：
python q 'select * from data.txt'
通过-d 可以指定分隔符
./q -d"," "select c1,c2 from a.txt where c2>2"
通过- 接受命令行
cal|grep -v "2016"|./q -H "select * from - where Sa != ''"
其他：
q "SELECT myfiles.c8,emails.c2 FROM exampledatafile myfiles JOIN group-emails-example emails ON (myfiles.c4 = emails.c1) WHERE myfiles.c8 = 'ppp'"
ps -ef | q -H "SELECT UID,COUNT(*) cnt FROM - GROUP BY UID ORDER BY cnt DESC LIMIT 3"
sudo find /tmp -ls | q "SELECT c5,c6,sum(c7)/1024.0/1024 AS total FROM - GROUP BY c5,c6 ORDER BY total desc"
q -t -H "SELECT strftime('%H:%M',date_time) hour_and_minute,count(*) FROM ./clicks.csv GROUP BY hour_and_minute"
q -t -H "SELECT hashed_source_machine,count(*) FROM ./clicks.csv GROUP BY hashed_source_machine"
q -H -t "SELECT request_id,score FROM ./clicks.csv WHERE score > 0.7 ORDER BY score DESC LIMIT 5"