为什么Shell输出JSON错误？

Question

这是文本文件：

pod install

这是shell脚本：

3   rootdbs          486348800      237475      879482880      429435      1626.7

这是运行中的输出：

#!/bin/bash
# date:2019-02-02
# informix Show prcdy clues.
LANG=EN
pathfile='/tmp'


check=`cat $pathfile/iof.txt|wc -l`

if [ $check -eq 0 ];then
   echo "No query results"
   exit 1
fi
gfd=($(cat $pathfile/iof.txt |awk '{print $1 }'))
pathname=($(cat $pathfile/iof.txt |awk '{print $2}'))
bytes_read=($(cat $pathfile/iof.txt |awk '{print $3}'))
page_reads=($(cat $pathfile/iof.txt |awk '{print $4}'))
bytes_write=($(cat $pathfile/iof.txt |awk '{print $5}'))
page_writes=($(cat $pathfile/iof.txt |awk '{print $6}'))
io_s=($(cat $pathfile/iof.txt |awk '{print $7}'))


printf '\t[\n'

printf '\t\t{\n'

      printf  "\t\t\t \"gfd\":\"${gfd}\",\"pathname\":\"${pathname}\",\"bytes_read\":\"${bytes_read}\",\"page_reads\":\"${page_reads}\",\"bytes_write\":\"${bytes_write}\",\"page_writes\":\"${page_writes}\",\"io/s\":\"${io_s}\"}\n"

printf "\t]\n"

最后一个键值格式错误。