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shell指令碼 列印函式呼叫時間

set sendmoney=1.0 set j=1 while true do     let "j=j+1"     echo "----------j is $j--------------"             time_micro1=$[$(date +%s%N)/1000000]      #balance= $(echo "./ipchain-cli -testnet getbalance")     ./ipchain-cli -testnet normalsendtoaddress TCBE2sx4fkBk6LW8jghQoXsLU6huS7fPYHm8 "$sendmoney"     time_micro2=$[$(date +%s%N)/1000000]      time_micro1=$(( $time_micro2 - $time_micro1 ))     echo $time_micro1     sleep 1s done