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Top Forums UNIX for Dummies Questions & Answers HELP Script don't work selecting lowest value!!! Post 302629077 by MetaBolic0 on Tuesday 24th of April 2012 09:32:47 AM
Old 04-24-2012
Quote:
Originally Posted by ygemici
try this Smilie
Code:
# awk '$2~!/^-/{if(NR==1){min2=$2;min=$0;next}{if(min2>$2)min=$0}}END{print min}' infile


Thanks for your reply, in last hour i was try the line you gave me because that line don't get me all files only fews. I'm new in script and after some trys i get this that work:
Code:
awk '{if (NR==1){min2=$2; min=$0;next}{if (min2>$2) min=$0}} END {print min}' infile | awk '{print $1}'

The problem is that there are some files that only have 1 column like this:
Quote:
ZINC03862582_0
ZINC03862582_1
In this case i DON'T whant the line because there are no value and the awk that i use give me always the low line how can i define the awk for only print the 1st column if there is value in the 2nd?

For what i read about awk i think the 1st part in your line
Code:
$2~!/^-/

is for tell to the awk the tipe of the 2nd column right?

About the
Code:
(NR==1)

i know this is "The Number of Records Variable" can you please tell me what this do?

Thanks againSmilie
 

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SCITOOLS(1)						      General Commands Manual						       SCITOOLS(1)

NAME
scitools - run a SciTools command SYNOPSIS
scitools command [OPTIONS] DESCRIPTION
The scitools script takes a command and runs a corresponding utility. The available commands are listed below. file2interactive Utility for taking a set of Python statements in a file and creating the corresponding interactive Python shell session. floatdiff Script for examining differences in regression tests involving floating-point numbers. Used in [1]. regression Simple front-end script to SciTools' Regression module. Used in [1]. ps2mpeg Utility for turning a set of PostScript files into an MPEG movie, using mpeg_encode or ppmtompeg. profiler Script for simplifying the execution of Python's profiling tools. Used in [1]. rename Script for renaming a set of files by substituting one string or regular expression with another. subst Script for subsituting a phrase by another in a set of files. Accepts regular expressions. Treated in [1]. replace Script for subsituting a phrase by another in a set of files. Does not use regular expressions, just plain text (well suited for substituting text with much use of backslashes, curly braces, and other special characters in regular expressions (e.g., LaTeX text). movie Script for creating a movie file from a sequence of image files (frames). By default an HTML file for displaying the image (PNG) files are made. pyreport Processes a Python script and pretty prints the results using LateX. If the script uses show() commands (from scitools.easyviz) they are caught by pyreport and the resulting graphs are inserted in the output pdf. Comments lines starting with "#!" are interpreted as rst lines and pretty printed accordingly in the pdf. [1] H. P. Langtangen: Python Scripting for Computational Science. Third edition, second printing. Springer, 2009. OPTIONS
-h, --help Show usage for all commands and exit. BUGS
Send comments, questions, bug reports etc. to scitools@googlegroups.com. LICENSE
SciTools is licensed under the new BSD license. AUTHOR
SciTools is written by Hans Petter Langtangen <hpl@simula.no>, Johannes Ring <johannr@simula.no>, Ilmar Wilbers <ilmarw@simula.no>, and Rolv E. Bredesen <rolv@simula.no>. This manual page is written by Johannes Ring <johannr@simula.no>. SCITOOLS(1)
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