Bash convert two Epoch times to remaining time

Question

I'm trying to convert two Epoch (Unix timestamp) dates to human readable date (time left)

AT=$(echo $RES | jq '.results[0].unixtime' | tr -d '"') # Returns unix time in JST.
NOW=$(TZ=":Asia/Tokyo" date +%s) # Returns current time in JST
DIFF=$(echo $AT-$NOW | bc)

As an example;

AT=1470038400
NOW=1470032871
DIFF=5529

How do I get the remaining time between the two in the following format: DAYd HOURh MINm SECs?

Answer 1

您可以尝试以下

printf "%dd %dh %dm %ds\n" $(( DIFF / (3600 * 24) ))  $(( (DIFF / 3600 ) % 24)) $(( (DIFF / 60) % 60)) $((DIFF % 60))