Linux shell 计算上班时间

周末，学习的一天，学习linux shell，做个小笔记。 #!/bin/bash time_start='09:00:00' time1=$(date +%Y)'-'$(date +%m)'-'$(date +%d)" $time_start" time2=$(date +%s -d "$time1") while true do     time3=$(date +%s)     time=$

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