In Bash script, I would like to compare two dates and if one is greater than the other, carry out a task.
Two dates that I'm comparing are:
svn repo's last change date, I get the date info like so:
svn info svn://server.com/reponame -r 'HEAD' | grep 'Last Changed Date'
It gives me something like this:
Last Changed Date: 2011-06-06 22:26:50 -0400 (Mon, 06 Jun 2011)
Then I'm finding the date information of the most current backup file in the directory, like so:
ls -lt --time-style="+%Y-%m-%d %H:%M:%S" | head -n 2 | tail -n 1
(I wonder if there is a better way to do it with out both head and tail above)
Which gives me something like this:
-rw-r--r-- 1 user1 user1 14 2011-06-09 07:52:50 svn.dump
What I would like to do next, is to retrieve date from first output and compare it with second output date and if one is greater than the other one, I will do an svn dump. what would be the most appropriate way to do this?