Sort and Unique in Perl Post: 302165572

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1. Shell Programming and Scripting

unique sort contents of a variable

Hi , I have #echo $var1 #hdisk2 hdisk3 hdisk0 hdisk2 Now I need to remove duplicate entries from this . ie. after sorting it should only have hdisk2 hdisk3 hdisk0 . I can have these values in a array as well . I understand we can use sort -u to remove the duplicates in a...

2. Shell Programming and Scripting

Perl sort unique by one field only

Hi all, I've searched the forum and I can find some code to sort uniquely in perl but not by a single field. I have a file with data such as the following: 1,test,34 1,test2,65 2,test,35, 1,test3,34 2,test,34 What i want to do is sort it uniqely by the first field only so I'd end...

3. Shell Programming and Scripting

What some ideas with sort and get unique data

Hi all, I am writing a script where i can parse through the directory and get common string in two directories i get. The command below SUN_PLATFORM=`$FIND $STREAM_PATH . -depth -name ShareableEntities | $AWK -F"/" '{if($10 ~ /sun5/) print $0}'` gives the following output:- ...

4. Shell Programming and Scripting

Awk sort and unique

5. Shell Programming and Scripting

Unique sort with two fields

I have a file with contents below 123,502 123,506 123,702 234,101 235,104 456,104 456,100 i want to sort such that i get a unique value in column A, and for those with multiple value in A, i want the lowest value in B. output should be 123,502 234,101 235,104 456,100

6. Shell Programming and Scripting

Unique sort with three fields

I have another file with three columns A,B,C as below 123,1,502 123,2,506 123,3,702 234,4,101 235,5,104 456,6,104 456,7,100 i want to sort such that i get a unique value in column A, and for those with multiple value in A, i want the lowest value in C. output should be Code:...

7. Shell Programming and Scripting

sort split merge -u unique

Hi, this is about sorting a very large file (like 10 gb) to keep lines with unique entries across SOME of the columns. The line originally looked like this: sort -u -k2,2 -k3,3n -k4,4n -k5,5n -k6,6n file_unsorted > file_sorted please note the -u flag. The problem is that this single...

8. UNIX for Dummies Questions & Answers

Print unique lines without sort or unique

I would like to print unique lines without sort or unique. Unfortunately the server I am working on does not have sort or unique. I have not been able to contact the administrator of the server to ask him to add it for several weeks.

9. Shell Programming and Scripting

Sort unique by multiple fields

i need to sort to get all the unique records based on the 1st and 2nd column, and keep the record with the highest value on 5th column if there are duplicates, every column with varies length a^2^x^y^z bxc^2xx2^aa^bvxxxx^cdd a^3^1^2^3 a^2^x^1^c I want a result which will only keep the 1st...

10. Shell Programming and Scripting

Sort unique

Hi, I have an input file that I have sorted in a previous stage by $1 and $4. I now need something that will take the first record from each group of data based on the key being $1 Input file 1000AAA|"ZZZ"|"Date"|"1"|"Y"|"ABC"|""|AA 1000AAA|"ZZZ"|"Date"|"2"|"Y"|"ABC"|""|AA...

LEARN ABOUT XFREE86

ppmtopgm

ppmtopgm(1)						      General Commands Manual						       ppmtopgm(1)

NAME

       ppmtopgm - convert a portable pixmap into a portable graymap

SYNOPSIS

       ppmtopgm [ppmfile]

DESCRIPTION

       Reads  a  portable  pixmap  as  input.  Produces a portable graymap as output.  The output is a "black and white" rendering of the original
       image, as in a black and white photograph.  The quantization formula used is .299 r + .587 g + .114 b.

       Note that although there is a pgmtoppm program, it is not necessary for simple conversions from pgm to ppm , because any  ppm  program  can
       read  pgm  (and	pbm  ) files automatically.  pgmtoppm is for colorizing a pgm file.  Also, see ppmtorgb3 for a different way of converting
       color to gray.  And ppmdist generates a grayscale image from a color image, but in a way that makes it easy to differentiate  the  original
       colors, not necessarily a way that looks like a black and white photograph.

QUOTE

       Cold-hearted orb that rules the night
       Removes the colors from our sight
       Red is gray, and yellow white
       But we decide which is right
       And which is a quantization error.

SEE ALSO

       pgmtoppm(1),ppmtorgb3(1),rgb3toppm(1),ppmdist(1),ppm(5),pgm(5)

AUTHOR

       Copyright (C) 1989 by Jef Poskanzer.

								   10 April 2000						       ppmtopgm(1)