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04-01-2009
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How to find first match and last match in a file
Hi All,
I have a below file: ================== 02:53 pravin-root 02:53 pravin-root 03:05 pravin-root 02:55 pravin1-root 02:59 pravin1-root ================== How do I find the first and last value of column 1. For example, how do I find 02:53 is the first time stamp and 03:05 is the last time stamp for user "pravin-root"? The no. of users can be large. I am trying a few options meanwhile... just posted here if someone already knows how to do it... Thanks and regards, Pravin Goyal |
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