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have to retrieve the distinct values (not duplicate) from 2nd column and display

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# 1  
Old 03-09-2010
have to retrieve the distinct values (not duplicate) from 2nd column and display
I have a text file names test2 with 3 columns as below . We have to retrieve the distinct values (not duplicate) from 2nd column and display. I have used the below command but giving some error.



Code:
NS3303 NS CRAFT LTD
NS3303 NS CHIRON VACCINES LTD
NS3303 NS ALLIED MEDICARE LTD
NS3303 NS BODET LTD
NS3303 LW FACTORY SHACK LTD
NS3303 NS ARC NEWSON LTD
NS3303 NS COASTAL MANAGEMENT LTD
NS3303 NS BIGWOOD ASSOCIATES LTD
NS3303 LW CENTRAL COMMUNICATION PRODUCTS LTD
NS3303 Lw WHITEHEAD GROUP LTD
NS3303 NS STUDIO BOX LTD
NS3303 EA PETAL POSTFORMING LTD
NS3303 LW ERSKINE HOSPITAL
NS3303 NS FRUDD CONSTRUCTION LTD
NS3303 EA ELWELL WATCHORN & SAXTON

Code:
awk -F, unique | awk -F, '{print $2}' test2

Code:
The output should be 
NS
LW
EA

Can you please help me? J
Last edited by radoulov; 03-09-2010 at 08:30 AM.. Reason: Please use code tags!
# 2  
Old 03-09-2010
Code:
awk '{up=toupper($2);a[up]}END{for(i in a) print i}' infile

# 3  
Old 03-09-2010
display the whole line
Code:
awk '![arr[$2]++' inputfile

display column 2
Code:
awk '![arr[$2]++ {print $2}' inputfile

Last edited by jim mcnamara; 03-09-2010 at 10:18 AM.. Reason: wrong answer...
# 4  
Old 03-09-2010
Is this a typo?

Code:
Lw

# 5  
Old 03-09-2010
Quote:
Originally Posted by jim mcnamara
Code:
awk '![arr[$2]++' inputfile

shouldn't it be like this though the OP wanted the second column only...
Code:
awk '!arr[$2]++' inputfile

# 6  
Old 03-09-2010
bash:
Code:
cut -d' ' -f2 test2 | sort -u

# 7  
Old 03-10-2010
Hi malcomex999
Hi malcomex999,

Thank u soo much for your help.but when I used this command , I am getting the output only NS .can you please help me further?

But my output shouls display all distinct values in the 2nd column means

Code:
NS
LW
EA

Code:
awk '{up=toupper($2);a[up]}END{for(i in a) print i}' infile

Last edited by radoulov; 03-10-2010 at 03:34 AM.. Reason: Please use code tags!
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