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Top Forums Shell Programming and Scripting Printing uniq first field with the the highest second field Post 302805377 by Scrutinizer on Friday 10th of May 2013 03:51:15 AM
Old 05-10-2013
Quote:
Originally Posted by ailnilanjan
Showing the usage

Code:
usage: sort [-cmu] [-o output] [-T directory] [-S mem] [-z recsz]
        [-dfiMnr] [-b] [-t char] [-k keydef] [+pos1 [-pos2]] files...

That should work, what is your OS and version?


---
Alternative for 3 or more occurrences, not exactly 3 (not sure what you require):
Code:
awk '$2>=M[$1]{M[$1]=$2} ++A[$1]==3{print $1,M[$1]}' file

**edit **
this solution is broken, since it will not always print the highest value if there are more than 3 values.. (thanks RudiC)

Last edited by Scrutinizer; 05-10-2013 at 05:48 AM..
This User Gave Thanks to Scrutinizer For This Post:
 

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SORT(1) 						      General Commands Manual							   SORT(1)

NAME
sort - sort a file of ASCII lines SYNOPSIS
sort [-bcdfimnru] [-tc] [-o name] [+pos1] [-pos2] file ... OPTIONS
-b Skip leading blanks when making comparisons -c Check to see if a file is sorted -d Dictionary order: ignore punctuation -f Fold upper case onto lower case -i Ignore nonASCII characters -m Merge presorted files -n Numeric sort order -o Next argument is output file -r Reverse the sort order -t Following character is field separator -u Unique mode (delete duplicate lines) EXAMPLES
sort -nr file # Sort keys numerically, reversed sort +2 -4 file # Sort using fields 2 and 3 as key sort +2 -t: -o out # Field separator is : sort +.3 -.6 # Characters 3 through 5 form the key DESCRIPTION
Sort sorts one or more files. If no files are specified, stdin is sorted. Output is written on standard output, unless -o is specified. The options +pos1 -pos2 use only fields pos1 up to but not including pos2 as the sort key, where a field is a string of characters delim- ited by spaces and tabs, unless a different field delimiter is specified with -t. Both pos1 and pos2 have the form m.n where m tells the number of fields and n tells the number of characters. Either m or n may be omitted. SEE ALSO
comm(1), grep(1), uniq(1). SORT(1)
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