Thanks to your help i've reached this step: original data: 01,01368,2010-12-02,09:07:00,Pass 01,01368,2010-12-02,10:54:00,Pass 01,01368,2010-12-02,13:07:04,Pass 01,01368,2010-12-02,18:54:01,Pass 01,01368,2010-12-03,09:02:00,Pass 01,01368,2010-12-03,13:53:00,Pass 01,01368,2010-12-03,16:07:00,Pass awk -F , '{if ($4 > "09:10:00") print $2 " was late on", $3 " by coming at ",$4}' test | tee DaysLate ; wc -l DaysLate 01368 was late on 2010-12-02 by coming at 10:54:00 01368 was late on 2010-12-02 by coming at 13:07:04 01368 was late on 2010-12-02 by coming at 18:54:01 01368 was late on 2010-12-03 by coming at 13:53:00 01368 was late on 2010-12-03 by coming at 16:07:00 5 DaysLate the only thing missing is to find a way to just take the earliest time of each day. in other words the above output should be: 0 DaysLate # as on 12-02 he came in at 09:07 which is before 09:10 and on 12-03 he came in at 09:02 which is also before the set time ---------------------------------------- > Date: Tue, 21 Dec 2010 14:35:13 -0500 > From: m.roth@xxxxxxxxx > To: centos@xxxxxxxxxx > Subject: Re: Text Proccessing script - advice? > > John Lundin wrote: > > On Tue, Dec 21, 2010 at 08:30:43PM +0200, Roland RoLaNd wrote: > > > > (chuckle) That's a bit more verbose than necessary. As a one-liner: > > > > awk -F, '($4>"09:00:00"){c[$2 "," $3]++};END{for (i in c){print i "," > > c[i]}}' $filename > > > > Well, yes, but he also wanted a count.... > > mark > > > 01368,2010-12-02,4 > > 01368,2010-12-03,3 > > > > (You might check if you want >="09:00:00", and include the edge case.) > > > > -F, # set separator to comma > > > > # (automatic loop over all data lines) > > ($4>"09:00:00"){ # do if fourth field greater than 09:... > > c[$2 "," $3]++ # increment hash element pointed to by > > # second and third fields separated by comma > > # (that is, hash on id,date) > > > > END{ # after finishing the data > > for (i in c){ # for each observed hash value in array c > > print i "," c[i] # print the hash value, comma, count > > > > -- > > lundin@xxxxxxxx > > _______________________________________________ > > CentOS mailing list > > CentOS@xxxxxxxxxx > > http://lists.centos.org/mailman/listinfo/centos > > > > > _______________________________________________ > CentOS mailing list > CentOS@xxxxxxxxxx > http://lists.centos.org/mailman/listinfo/centos _______________________________________________ CentOS mailing list CentOS@xxxxxxxxxx http://lists.centos.org/mailman/listinfo/centos