Get the range instance of the previous month, week, and timestamp under the shell

As shown below:

#!/bin/bash
#1 month agohistoryTime=$(date "+%Y-%m-%d %H" -d '1 month ago')
echo ${historyTime}
historyTimeStamp=$(date -d "$historyTime" +%s)
echo ${historyTimeStamp}

#A week ago$(date "+%Y-%m-%d %H" -d '7 day ago')

#January 1 this monthdate_this_month=`date +%Y%m01`

#One day agodate_today=`date -d '1 day ago' +%Y%m%d`

#One hour ago$(date "+%Y-%m-%d %H" -d '-1 hours')

The above article is obtained from the previous month, weekly time and timestamp range examples are all the content I have shared with you. I hope you can give you a reference and I hope you can support me more.