bash 将 HH:MM:SS (hours:minutes:seconds.split seconds) 转换为秒的简单方法
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Simple way to convert HH:MM:SS (hours:minutes:seconds.split seconds) to seconds
提问by Mint
What's an easy way to convert 00:20:40.28
(HH:MM:SS) to seconds with a Bash script?
00:20:40.28
使用 Bash 脚本将(HH:MM:SS)转换为秒的简单方法是什么?
Split seconds can be cut out, it's not essential.
分秒可以剪掉,这不是必需的。
回答by dreamlax
Try awk
. As a bonus, you can keep the split seconds.
试试awk
。作为奖励,您可以保留分秒。
echo "00:20:40.25" | awk -F: '{ print ( * 3600) + ( * 60) + }'
回答by Lri
This would work even if you don't specify hours or minutes: echo "04:20:40" | sed -E 's/(.*):(.+):(.+)/\1*3600+\2*60+\3/;s/(.+):(.+)/\1*60+\2/' | bc
即使您不指定小时或分钟,这也会起作用: echo "04:20:40" | sed -E 's/(.*):(.+):(.+)/\1*3600+\2*60+\3/;s/(.+):(.+)/\1*60+\2/' | bc
回答by NawaMan
Try this:
尝试这个:
T='00:20:40.28'
SavedIFS="$IFS"
IFS=":."
Time=($T)
Seconds=$((${Time[0]}*3600 + ${Time[1]}*60 + ${Time[2]})).${Time[3]}
IFS="$SavedIFS"
echo $Seconds
($<string>) splits <string>based on the splitter (IFS
).
($ <string>)基于拆分器 ( )拆分<string>IFS
。
${<array>[<index>]} returns the element of the <array>at the <index>.
${ <array>[ <index>]} 返回<index>处<array>的元素。
$((<arithmetic expression>)) performs the arithmetic expression.
$(( <算术表达式>)) 执行算术表达式。
Hope this helps.
希望这可以帮助。
回答by kvz
If you are processing a time from ps
, mind you that the format 2-18:01
is also possible for 2 days, 19 hours, 1 minute. In that case you'll want to checkout: Parse ps' "etime" output and convert it into seconds
如果您正在处理从 开始的时间ps
,请注意格式2-18:01
也可以是 2 天 19 小时 1 分钟。在这种情况下,您需要结帐:解析 ps 的“etime”输出并将其转换为秒
回答by wgzhao
echo "40.25" | awk -F: '{ if (NF == 1) {print $NF} else if (NF == 2) {print * 60 + } else if (NF==3) {print * 3600 + * 60 + } }'
40.25
echo "10:40.25" | awk -F: '{ if (NF == 1) {print $NF} else if (NF == 2) {print * 60 + } else if (NF==3) {print * 3600 + * 60 + } }'
640.25
echo "20:10:40.25" | awk -F: '{ if (NF == 1) {print $NF} else if (NF == 2) {print * 60 + } else if (NF==3) {print * 3600 + * 60 + } }'
72640.25
回答by mikevmk
If you don't know what exactly do you have - SS, MM:SS or HH:MM:SS, like after youtube-dl --get-duration
, then awk magic could be useful:
如果你不知道你到底有什么 - SS、MM:SS 或 HH:MM:SS,比如 after youtube-dl --get-duration
,那么 awk 魔法可能很有用:
echo 12 | awk -F\: '{ for(k=NF;k>0;k--) sum+=($k*(60^(NF-k))); print sum }'
12
echo 35:12 | awk -F\: '{ for(k=NF;k>0;k--) sum+=($k*(60^(NF-k))); print sum }'
2112
echo 1:35:12 | awk -F\: '{ for(k=NF;k>0;k--) sum+=($k*(60^(NF-k))); print sum }'
5712
回答by Aymeric Do
You can convert minutes to hour, seconds, or minutes with bc
command.
您可以使用bc
命令将分钟转换为小时、秒或分钟。
By example:
举例:
How many minutes for 1000 sec ?
1000秒需要多少分钟?
$ echo 'obase=60;1000' | bc
02 00
then -> 2 min
然后 -> 2 分钟
How much hour for 375 min ?
375 分钟需要多少小时?
$ echo 'obase=60;375'| bc
06 15
then -> 06h15
然后 -> 06h15
How days for 56 hours?
56 小时是几天?
$ echo 'obase=24;56' | bc
02 08
then 02 days and 08 hours
然后是 02 天 08 小时
bc with obase is extra!
带 obase 的 bc 是额外的!
回答by Toby Speight
With GNU date, you can perform the conversion if the duration is less than 24 hours, by treating it as a time of day on the epoch:
使用 GNU 日期,如果持续时间少于 24 小时,您可以执行转换,方法是将其视为时代的一天中的时间:
to_seconds() {
local epoch=$(date --utc -d @0 +%F)
date --utc -d "$epoch " +%s.%09N
}
Running it with the example from the question:
使用问题中的示例运行它:
$ to_seconds 00:20:40.29
1240.290000000
Note that --utc
, @
, %s
and %N
are all GNU extensions not necessarily supported by other implementations.
请注意--utc
,@
、%s
和%N
都是其他实现不一定支持的 GNU 扩展。
回答by tzot
I have this old shell function (/bin/sh compatible in the sense of POSIX shell, not bash) which does this conversion in integer math (no fractions in the seconds):
我有这个旧的 shell 函数(/bin/sh 在 POSIX shell 的意义上兼容,而不是 bash)它在整数数学中进行这种转换(秒内没有分数):
tim2sec() {
mult=1
arg=""
res=0
while [ ${#arg} -gt 0 ]; do
prev="${arg%:*}"
if [ "$prev" = "$arg" ]; then
curr="${arg#0}" # avoid interpreting as octal
prev=""
else
curr="${arg##*:}"
curr="${curr#0}" # avoid interpreting as octal
fi
curr="${curr%%.*}" # remove any fractional parts
res=$((res+curr*mult))
mult=$((mult*60))
arg="$prev"
done
echo "$res"
}
Outputs:
输出:
$ tim2sec 1:23:45.243
5025
It works with SS, MM:SS and HH:MM:SS only :)
它仅适用于 SS、MM:SS 和 HH:MM:SS :)
回答by netricate
I haven't tested this but, I think this is how you'd split the string. Followed by multiplying by the appropriate amounts for hours and minutes.
我还没有测试过这个,但是我认为这就是你分割字符串的方式。然后乘以适当的小时和分钟数。
mytime='00:20:40.28′
part1=${mytime%%:*}; rest=${mytime#*:}
part2=${rest%%:*}; rest=${rest#*:}
part3=${rest%%:*};