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Truncate Rails Development/test Logs

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        In rails applications development.log and test.log like to grow forever, which takes up space and makes them slow to grep.  If I just delete them running processes with logs open might get confused.  So I can use truncate instead:

truncate ~/www/*/log/*.log

Even easier, ask cron to do it for me every night:
4 22 * * * * truncate -s 0k  ~/www/*/log/*.log


Snippets Manager replied on Tue, 2007/08/14 - 1:01am

Can somebody point me to this truncate command? It doesn't seem to be in my distro. What about race conditions? Does it risk making the log file inconsistent for automatic parsing, etc.?