How can I get the 1st and last date of the previous month in a Bash script?

Question

I have scheduled a Bash script to run on the 1st of the month but I need to create 2 variables in it with the 1st and last date of the previous month, whatever those may be.

Answer 1

You can try following date commands regardless of the day you are executing them to get first and last day of previous month

Firstday=`date -d "-1 month -$(($(date +%d)-1)) days"`
Lastday=`date -d "-$(date +%d) days"`