CODEWITHSUNDEEP
linuxbash
Matt B
Matt B

Reputation: 37

Calendar months variables in BASH script

I am writing a BASH script that calls an API that presents metrics for specific time-frames. I plan to run the script on a cron job on the 1st of each month, the API call needs to contain the start and end time and be in a epoch format with milliseconds. Milliseconds should be ok to set to 000 as it doesnt need to be that specific but the API requires it.

How can I code the script to look at the current human readable time then look at the exact same time exactly 1 calendar month before, then convert both outputs to epoch, and then enter the epoch times in the curl command as a variable?

Example:

Script runs at 1am on July 1st, script then understands a full calendar month before was June 1st, converts both to epoch, places them into the curl command using variables.

I understand how to get a human readable date for 1 month ago, however I am unsure how best to convert these dates to epoch.

 date --date="1 month ago" +"%d%m%Y"

Upvotes: 1

Views: 450

Answers (1)

Matt B
Matt B

Reputation: 37

To create a variable using date in epoch times with milliseconds:

ENDDATE=`date +%s%N | cut -b1-13`
STARTDATE=`date --date="1 month ago" +%s%N | cut -b1-13`

Use these variables in the cURL command.

Upvotes: 1

Related Questions