Linux--shell脚本造大数据

#!/bin/bash
msgid=4981
while read var1
do
echo $msgid","$var1",tsst,content made by qhd for performance testing zzzzzzzzzzzzzzzzzz,Ctrip,2014-07-03 07:37:59.520,0,NULL,READ,F,2014-07-03 11:18:24.270" >> newfile.txt
msgid=$(($msgid+1))
done<uid.txt