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Top Forums Shell Programming and Scripting Sort based on column 1, not working with awk Post 302879202 by Junes on Wednesday 11th of December 2013 08:40:18 AM
Old 12-11-2013
Sort based on column 1, not working with awk

Hi Guru,
I need some help regarding awking the output so it only show the first line (based on column) of each row.

So If column has 1, three row, then it only show the first line of that row, based on similar character in column 1. So i am trying to achieve a sort, based on column one and only show the first line.

I used the follownig command - awk NF==1'{print $2,$9}', but naturally this is giving the wrong output.

See below.


Output
Code:
1 CAG760
1 CAG123
1 CAI000
2 CBH628
2 CBI123
2 CBH630

Output Required
Code:
1 CAG760
2 CBH628

 

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COLRM(1)						    BSD General Commands Manual 						  COLRM(1)

NAME
colrm -- remove columns from a file SYNOPSIS
colrm [start [stop]] DESCRIPTION
The colrm utility removes selected columns from the lines of a file. A column is defined as a single character in a line. Input is read from the standard input. Output is written to the standard output. If only the start column is specified, columns numbered less than the start column will be written. If both start and stop columns are spec- ified, columns numbered less than the start column or greater than the stop column will be written. Column numbering starts with one, not zero. Tab characters increment the column count to the next multiple of eight. Backspace characters decrement the column count by one. ENVIRONMENT
The LANG, LC_ALL and LC_CTYPE environment variables affect the execution of colrm as described in environ(7). EXIT STATUS
The colrm utility exits 0 on success, and >0 if an error occurs. SEE ALSO
awk(1), column(1), cut(1), paste(1) HISTORY
The colrm command appeared in 3.0BSD. BSD
August 4, 2004 BSD
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