如何在 Mac OS X 中使用 Bash 将 +1 添加到纪元时间？

Question

I'd like to add +1 to the epoch time conversion. Right now it outputs 1615715999 & 1 separately, but I'd like for the output to be 1615716000 which is epoch time + 1.

This is on Mac OSX using BASH, any suggestions? Truly appreciate it!!!

epoch_s= date -j -f "%Y-%m-%d %H:%M:%S" "2021-03-14 01:59:59" +%s
    
declare -i epoch_start=$(( $epoch_s + 1 )) 
    
echo $epoch_start 

Answer 1

You're missing the command substitution syntax:

epoch_s=$(date -j -f "%Y-%m-%d %H:%M:%S" "2021-03-14 01:59:59" +%s)
#       ^^........................................................^

No spaces are allowed around the = .

The reason you get the output you see is that the date output is not stored to the variable, it is emitted to stdout. Then the epoch_start variable is assigned the value 1 (an unset variable has value zero in bash arithmetic) which gets echoed on the next line.