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Full Discussion: awk search for max and min while ignoring special character
Top Forums Shell Programming and Scripting awk search for max and min while ignoring special character Post 302950859 by neutronscott on Wednesday 29th of July 2015 12:08:37 PM
Old 07-29-2015
The problem with max is the > and comparing strings to numbers.
The problem with min is we start with min being 0 and none of those are below zero.

Let's skip lines that don't have 2 columns, and also initialize using the first line.

Code:
$ awk  'NR==1 {min=$2; next} NF>1 && $2<min {min=$2} END {print min}' input
39.5520

$ awk  'NR==1 {max=$1; next} NF>1 && $1>max {max=$1} END {print max}' input
-119.9950

This User Gave Thanks to neutronscott For This Post:
ncwxpanther
 

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LEARN ABOUT DEBIAN

vend::ship::postal

Vend::Ship::Postal(3pm) 				User Contributed Perl Documentation				   Vend::Ship::Postal(3pm)

NAME

       Vend::Ship::Postal -- Calculate US Postal service international rates

SYNOPSIS

	(in catalog.cfg)

	   Database   usps	       ship/usps.txt		  TAB
	   Database   air_pp	       ship/air_pp.txt		  TAB
	   Database   surf_pp	       ship/surf_pp.txt 	  TAB

	(in shipping.asc)

	   air_pp: US Postal Air Parcel
	       crit	       weight
	       min	       0
	       max	       0
	       cost	       e No shipping needed!
	       at_least        4
	       adder	       1
	       aggregate       70
	       table	       air_pp

	       min	       0
	       max	       1000
	       cost	       s Postal

	       min	       70
	       max	       9999999
	       cost	       e Too heavy for Air Parcel

	   surf_pp:    US Postal Surface Parcel
	       crit	       weight
	       min	       0
	       max	       0
	       cost	       e No shipping needed!
	       at_least        4
	       adder	       1
	       aggregate       70
	       table	       surf_pp

	       min	       0
	       max	       1000
	       cost	       s Postal

	       min	       70
	       max	       9999999
	       cost	       e Too heavy for Postal Parcel

DESCRIPTION

       Looks up a service zone by country in the "usps" table, then looks in the appropriate rate table for a price by that zone.

       Can aggregate shipments greater than 70 pounds by assuming you will ship multiple 70-pound packages (plus one package with the remainder).

perl v5.14.2							    2010-03-25						   Vend::Ship::Postal(3pm)
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