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Given a log of the following format

2009-11-11 13:13:44,716 INFO Something happened : problem description . Waited 3 seconds
2009-11-11 13:23:44,716 INFO Something happened : problem description . Waited 1 second
2009-11-11 13:33:44,716 INFO Something happened : some other problem description .

How can I extract just the strings which are between : and .?

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up vote 3 down vote accepted


<logfile sed -e"s/^.* : \(.*\) \..*/\1/"
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cat logfile | cut -f1 -d. | cut -f4 -d:
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