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Top Forums Shell Programming and Scripting Problem to print out record got smallest number in specific column Post 302890350 by cpp_beginner on Wednesday 26th of February 2014 10:10:07 PM
Old 02-26-2014
Thanks, it worked fine and perfect Smilie

---------- Post updated at 09:59 PM ---------- Previous update was at 09:39 AM ----------

Hi Subbeh,

I have one more question need your advice :
Code:
48524   48543   21      2
48520   48547   25      2

From the above situation, column 4 between both line are smallest.
But column 3 in line 1 smaller than column 3 in line 2.
Do you know how to change your awk code to allow it print out the line that has smallest number in column 3 and column 4?

Thanks for advice.

---------- Post updated at 10:06 PM ---------- Previous update was at 09:59 PM ----------

Hi Subbeh,

I just find a "bug" when try to run your awk code :
Input file
Code:
48524   48543   21      0
48520   48547   25      2

Output file after run awk program
Code:
awk '{x=$3<$4?$3:$4; i=i?i:x ;if(x<=i){i=x; s=$0}} END{print s}' file
48520   48547   25      2

Desired Output :
Code:
48524   48543   21      0

Thanks ya.

---------- Post updated at 10:10 PM ---------- Previous update was at 10:06 PM ----------

Hi Klashxx,

Do you have any idea how to do the second comparison and print out the line that has smallest number in column 3 and 4?
I notice in some case, the smallest number are in same column (either column 3 or 4). In that case, I would like to compare the other column and print out the line that record smallest number in both column 3 and 4.

Thanks a lot.
It a bit complicated case Smilie
 

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COLUMN(1)						    BSD General Commands Manual 						 COLUMN(1)

NAME
column -- columnate lists SYNOPSIS
column [-tx] [-c columns] [-s sep] [file ...] DESCRIPTION
The column utility formats its input into multiple columns. Rows are filled before columns. Input is taken from file operands, or, by default, from the standard input. Empty lines are ignored. The options are as follows: -c Output is formatted for a display columns wide. -s Specify a set of characters to be used to delimit columns for the -t option. -t Determine the number of columns the input contains and create a table. Columns are delimited with whitespace, by default, or with the characters supplied using the -s option. Useful for pretty-printing displays. -x Fill columns before filling rows. Column exits 0 on success, >0 if an error occurred. ENVIRONMENT
COLUMNS The environment variable COLUMNS is used to determine the size of the screen if no other information is available. EXAMPLES
(printf "PERM LINKS OWNER GROUP SIZE MONTH DAY HH:MM/YEAR NAME " ; ls -l | sed 1d) | column -t SEE ALSO
colrm(1), ls(1), paste(1), sort(1) HISTORY
The column command appeared in 4.3BSD-Reno. AVAILABILITY
The column command is part of the util-linux-ng package and is available from ftp://ftp.kernel.org/pub/linux/utils/util-linux-ng/. BSD
June 6, 1993 BSD
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