KSH question

From: Peter Le (Peter.t.le_at_philips.com)
Date: 09/08/03 

Date: Mon, 08 Sep 2003 14:20:44 -0700

Hi,

I'm new to shell scripting. I would like to know how to
create a ksh script, that print out duplicate/same entry
in a file. or point to location where I can learn to do
it.

Ex:/etc/passwd
user1:55:user1 test1
user2:55:user2 test2
user3:60:user3 test3
user4:70:user4 test4
user5:70:user5 test5

the script will print to the output are:

user1:55:user1 test1
user2:55:user2 test2
user4:70:user4 test4
user5:70:user5 test5

Thanks,
PL

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