Rotate a file that's open and being written at all times

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http://serverfault.com – I have an linux application that continually writes logging information into a log file, eg. /var/log/application.log. As the application does not rotate the file automatically, this log file can reach a size of gigabytes in some weeks, so I want to be able to rotate this file properly My main concern here is that to rotate a file that is opened by the application at all times, I will probably need to: Move the file to its rotated form /var/log/application.log -> /var/log/application.log.2013-01-28 Create an empty /var/log/application.log. Obs: At this point the application process is st (HowTos)