计算给定数据集的时间差

Question

我有一个 down/up 次的列表，需要计算每天的总停机时间

这是原始数据集的片段：

Jan  1 00:09:56 changed state to down
Jan  1 00:10:02 changed state to up
Jan  1 00:10:45 changed state to down
Jan  1 00:10:52 changed state to up
Jan  1 00:11:45 changed state to down
Jan  1 00:11:52 changed state to up
Jan  2 00:14:55 changed state to down
Jan  2 00:15:05 changed state to up
Jan  2 00:15:35 changed state to down
Jan  2 00:16:41 changed state to up
Jan  3 00:05:22 changed state to down
Jan  3 00:05:28 changed state to up
Jan  3 23:59:58 changed state to down
Jan  4 00:00:19 changed state to up
Jan  4 00:49:28 changed state to down
Jan  4 00:49:34 changed state to up

我要的是这样的输出：

Jan 1: 20 seconds
Jan 2: 76 seconds
Jan 3: 27 seconds
Jan 4: 6 seconds

我编写了这个脚本来将时间戳转换为纪元时间：

while read i; do
  datetime=$(echo $i | awk '{print " "" "}')
  epochtime=$(date -d "$datetime" +\%s)
  echo $epochtime
done < ./file

这将给我这样的数据：

我似乎找不到将它们组合成一行的方法，因此我可以使用此代码（或类似代码）：

for i in $epochtime; do
  starttime=$(awk '{print }')
  endtime=$(awk '{print }')
  delta=$(( endtime - starttime ))
  echo $delta
done

提前致谢！

Answer 1

$ cat tst.awk
{
    prevSecs = currSecs
    prevDate = currDate
    currDate =  " " 
     = (index("JanFebMarAprMayJunJulAugSepOctNovDec",) + 2) / 3
    currSecs = mktime("2022 " gensub(/:/," ","g"), 1)
}

NR%2 == 0 {
    dayDeltaSecs += (currSecs - prevSecs)
}

(NR > 1) && (currDate != prevDate) {
    printf "%s: %d seconds\n", prevDate, dayDeltaSecs
    dayDeltaSecs = 0
}

END {
    printf "%s: %d seconds\n", prevDate, dayDeltaSecs
}

$ awk -f tst.awk file
Jan 1: 20 seconds
Jan 2: 76 seconds
Jan 3: 27 seconds
Jan 4: 6 seconds

原回答：

这可能是您尝试使用 GNU awk 实现时间函数的目的：

$ cat tst.awk
{
    prevEt = epochtime
     = (index("JanFebMarAprMayJunJulAugSepOctNovDec",) + 2) / 3
    epochtime = mktime("2022 " gensub(/:/," ","g"), 1)
}
NR%2 == 0 {
    print prevEt, epochtime, epochtime - prevEt
}

$ awk -f tst.awk file
1640995796 1640995802 6
1640995845 1640995852 7

计算给定数据集的时间差

Calculate time difference for a given dataset

bash

awk

datetime

sed