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How can i delete the duplicates based on one column of a line

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Top Forums Shell Programming and Scripting How can i delete the duplicates based on one column of a line
# 8  
Old 08-04-2009
This should work:

Code:
awk '!arr[$3]++' file

This is my output:

Code:
$ cat file
(08/03/2009 22:57:42.414)(:) king aaaaaaaaaaaaaaaa bbbbbbbbbbbbbbbbbbbbbb
(08/03/2009 22:57:42.416)(:) John cccccccccccc cccccvssssssssss baaaaa
(08/03/2009 22:57:42.417)(:) Michael ddddddd tststststtststts
(08/03/2009 22:57:42.425)(:) Ravi vvvvvvvvvvvvvvvvvvsssssssss bsbbbbs
(08/03/2009 22:57:42.426)(:) John bgbhhhhhhhhhhhhhhhhh dddddddddddddd
(08/03/2009 22:57:42.427)(:) king hhhhhhhhhhhhhssssss rr
$
$ awk '!arr[$3]++' file
(08/03/2009 22:57:42.414)(:) king aaaaaaaaaaaaaaaa bbbbbbbbbbbbbbbbbbbbbb
(08/03/2009 22:57:42.416)(:) John cccccccccccc cccccvssssssssss baaaaa
(08/03/2009 22:57:42.417)(:) Michael ddddddd tststststtststts
(08/03/2009 22:57:42.425)(:) Ravi vvvvvvvvvvvvvvvvvvsssssssss bsbbbbs

Regards
# 9  
Old 08-04-2009
Code:
awk '{x = x + 1
> y[x] = $3
> for ( z = 0; z <= x; ++z ) {
> if ( z == x )
> print
> if ( y[z] == $3 )
> break
> }}' file1

# 10  
Old 08-04-2009
Code:
sort -u -k 3,3 file

# 11  
Old 08-05-2009
Hi Franklin,
I am afraid, I tried that in my SunOS box and still getting the syntax error...Not sure if that won't work in Sun box.
# 12  
Old 08-05-2009
Use nawk or /usr/xpg4/bin/awk on Solaris.

Regards
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