Shell variable
yyyy_mm_dd_1=`date -d "$vDay" +%Y-%m-%d` #yesterday
vEdition="7471"
start_time="${yyyy_mm_dd_1} 00:00:00.000"
end_time="${yyyy_mm_dd_1} 23:59:59.999"your_name="qinjx"
echo $your_name
echo ${your_name}字符串
双引号
拼接字符串
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