自動(dòng)解析mongo查詢結(jié)果的json格式，提取指定字段名。
該版本在上一版本基礎(chǔ)上自動(dòng)識(shí)別json字段和值之間的空格數(shù)量，兼容性空前了。

另外，也可以mongoexport得到csv格式的mongodb數(shù)據(jù):

#mongoexport -d taikang -c users -q "{time:/^${day}.*$/}" -o ${day}_taikang_yiliao_users.txt

mongoexport -d taikang -c users -q "{time:/^${day}.*$/}" -f _id,phone,name,gender,time --csv -o ${day}_taikang_yiliao_users.csv

#autoawk /g/SRAll/autoawktest.txt ClickDay Idfa ClickMin ClickSec

function autoawkarr(){
[ "$1" ] && file=$1 && shift || return
[ "$2" ] && allnames=$* || return
fieldarr=("$allnames")
tmp='gawk @BEGIN {FS = OFS = ","}{ match($0,/vname" *: *"([^"]*?)"/,a);match($0,/vname" *: *([^,|"|}]*?)[,|"|}]/,b);print a[1],b[1];}@'
while read line
do
for autoname in ${fieldarr[*]}
do
tmpstr=${tmp//vname/${autoname}}
echo -e $line|eval ${tmpstr//@/\'} > tmp.txt
cat tmp.txt|tr -s "\n" ","
done
echo 
done < $file
}