Looking at this thread, hellsd, we are never going to get a solution as you haven't posted what output you expect to achieve.

Please post something along the lines of....

"my original file is
.
.
10 lines of input
.
.

I expect to get
.
.
10 lines of output
.
.
"

I cannot see exactly what you are trying to get?! Which algorithm are you trying to formulate (i.e. you say you want to keep the original case, but where you have KEVIN and kevin, and want only one of these case variations, which is the correct case variation you wish to keep), etc....

Cheers
ZB

Input file:

line 1: David, password: ab4TkN
line 2: Kevin, password: kRq5
line 3: kevin, PASSWORD: kRq5
line 4: abcd
line 5: efgh
line 6: ABCD
line 7: efgh

Output file:
line 1: David, password: ab4TkN


Explaination:
This i s a part of the unix process I wrote. When I get a file that contain duplicate lines:
1. I need to present in another file(or in the same file) only the uniq lines as they appear in the original Input file

2. The uniq -u doesn't ignore case - So this is the main problem, I guess.

Thanks again and I hope my message is clear now.

roy.

here u go .......

#!/usr/bin/ksh

cat file1 | tr -s " " | cut -d":" -f 2 | tr "[A-Z]" "[a-z]" | sort | uniq -u > file2

while read line
do
grep -i "$line" file1
done < file2

I call to your script runIt
I replace file1 with $1

Now I run it:
runIt file1

Output:

I get file2 with the correct lines, but they are all in lowercase.

I look at the unix console and it prints the Original file1 content and then the correct result.

How can I get the correct output in a new file.

*I am running on solaris machine, tcsh.
Thanks

runit file1 > file3

See the change cut -d":" -f 2-



#!/usr/bin/ksh

cat $1 | tr -s " " | cut -d":" -f 2- | tr "[A-Z]" "[a-z]" | sort | uniq -u > file2

while read line
do
grep -i "$line" $1
done < file2

Using awk to print only unique lines...

awk '{x=tolower($0);a[x]++;b[x]=$0}END{for(x in a)if(a[x]==1)print b[x]}' file1 > file2

Tested on the sample data...

David, password: ab4TkN