About linux : How-to-get-last-N-min-or-N-hour-logs-from-any-log-files-using-command-in-linux

I need to get the logs of the last n min or n hrs from any log file. I searched and executed many commands but none of them not working. If there is any specific command rather than script it would be perfect. my time format for Nginx is “2022/01/05 11:47:41”

I tried below commands

awk -v bt=$(date "+%s" -d "30 minutes ago") '$1 > bt {printf("%s|%s|%s\n", strftime("%F %T",$1), $3, $7)} ' /var/log/nginx/access.log

sed -n "/^$(date --date="60 minutes ago" "+%d/%b/%Y:%H:%M")/,\$p" /var/log/nginx/access.log

grep -E (date -d -15minutes "+%Y/%m/%d %H:%M"|date -d "+%Y/%m/%d %H:%M")

and many commands like above.

Try this command and it works for me

sed -n /$(date --date="15 minutes ago" "+%T")/,/$(date "+%T")/p logfile > newfile

date --date="15 minutes ago" "+%T" is time before 15 minutes

date "+%T" is the current time

You have to modify the time format based and your log file