how to check production logs
i logged to production server i went to server log path.
i see bunch of log files at different timestamps
lets say xyz.log is at 1:30 am which i am interested to see.
how to open and hjow to see it?
when i logged using winscp says log in denied to copy over to windows laptoip to check.
like i want to zgprep or grep all "NullPointerErrors" between 12:30 AM till 2:30AM how do i check?
Also how to check how many times it was restarted?
any good best practices on production logs?
please advise any god links, resources on it?