Sponsored Content
Top Forums Shell Programming and Scripting Print rows in reverse order if values decrease along the column Post 302406097 by dennis.jacob on Monday 22nd of March 2010 02:52:06 AM
Old 03-22-2010
Another one in perl,

Code:
perl -lane 'if (/^-/) { foreach (sort keys(%h)) { print "$h{$_}";  } %h=();print; } else { $h{$F[1]}=$_; }' file

and the reverse sort,

Code:
perl -lane 'if (/^-/) { foreach (reverse sort keys(%h)) { print "$h{$_}";  } %h=();print; } else { $h{$F[1]}=$_; }' file

 

9 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

How to manipulate first column and reverse the line order in third and fourth column?

How to manipulate first column and reverse the line order in third and fourth column as follws? For example i have a original file like this: file1 0.00000000E+000 -1.17555359E-001 0.00000000E+000 2.00000000E-002 -1.17555359E-001 0.00000000E+000 ... (1 Reply)
Discussion started by: Max Well
1 Replies

2. Shell Programming and Scripting

print unique values of a column and sum up the corresponding values in next column

Hi All, I have a file which is having 3 columns as (string string integer) a b 1 x y 2 p k 5 y y 4 ..... ..... Question: I want get the unique value of column 2 in a sorted way(on column 2) and the sum of the 3rd column of the corresponding rows. e.g the above file should return the... (6 Replies)
Discussion started by: amigarus
6 Replies

3. UNIX for Dummies Questions & Answers

How to print arguments in reverse order?

Hey all, How do I make a script print its arguments in reverse order? Thanks (5 Replies)
Discussion started by: unclepickle1
5 Replies

4. Shell Programming and Scripting

comparing column of two different files and print the column from in order of 2nd file

Hi friends, My file is like: Second file is : I need to print the rows present in file one, but in order present in second file....I used while read gh;do awk ' $1=="' $gh'" {print >> FILENAME"output"} ' cat listoffirstfile done < secondfile but the output I am... (14 Replies)
Discussion started by: CAch
14 Replies

5. Shell Programming and Scripting

Compare values in two files. For matching rows print corresponding values from File 1 in File2.

- I have two files (File 1 and File 2) and the contents of the files are mentioned below. - I am trying to compare the values of Column1 of File1 with Column1 of File2. If a match is found, print the corresponding value from Column2 of File1 in Column5 of File2. - I tried to modify and use... (10 Replies)
Discussion started by: Santoshbn
10 Replies

6. Shell Programming and Scripting

print in reverse order

Hi, I want to print the item in reverse order such that the output would look like 00 50 50 23 40 22 02 96 Below is the input: 00 05 05 32 04 22 20 69 Video tutorial on how to use code tags in The UNIX and Linux Forums. (5 Replies)
Discussion started by: reignangel2003
5 Replies

7. Shell Programming and Scripting

Remove rows with e column values

Hi All, I have a big file with 232 columns and 9 million rows, I want to delete all rows with same column values in col3 through col232. Also the output should be sorted based on first 2 columns. Here is a reduced example with 6 columns. I want to remove rows with duplicate values in col3... (9 Replies)
Discussion started by: alpesh
9 Replies

8. Shell Programming and Scripting

awk command to print only selected rows in a particular column specified by column name

Dear All, I have a data file input.csv like below. (Only five column shown here for example.) Data1,StepNo,Data2,Data3,Data4 2,1,3,4,5 3,1,5,6,7 3,2,4,5,6 5,3,5,5,6 From this I want the below output Data1,StepNo,Data2,Data3,Data4 2,1,3,4,5 3,1,5,6,7 where the second column... (4 Replies)
Discussion started by: ks_reddy
4 Replies

9. Shell Programming and Scripting

awk Print New Column For Every Two Lines and Match On Multiple Column Values to print another column

Hi, My input files is like this axis1 0 1 10 axis2 0 1 5 axis1 1 2 -4 axis2 2 3 -3 axis1 3 4 5 axis2 3 4 -1 axis1 4 5 -6 axis2 4 5 1 Now, these are my following tasks 1. Print a first column for every two rows that has the same value followed by a string. 2. Match on the... (3 Replies)
Discussion started by: jacobs.smith
3 Replies
XML::LibXML::NodeList(3pm)				User Contributed Perl Documentation				XML::LibXML::NodeList(3pm)

NAME
XML::LibXML::NodeList - a list of XML document nodes DESCRIPTION
An XML::LibXML::NodeList object contains an ordered list of nodes, as detailed by the W3C DOM documentation of Node Lists. SYNOPSIS
my $results = $dom->findnodes('//somepath'); foreach my $context ($results->get_nodelist) { my $newresults = $context->findnodes('./other/element'); ... } API
new(@nodes) You will almost never have to create a new NodeList object, as it is all done for you by XPath. get_nodelist() Returns a list of nodes, the contents of the node list, as a perl list. string_value() Returns the string-value of the first node in the list. See the XPath specification for what "string-value" means. to_literal() Returns the concatenation of all the string-values of all the nodes in the list. get_node($pos) Returns the node at $pos. The node position in XPath is based at 1, not 0. size() Returns the number of nodes in the NodeList. pop() Equivalent to perl's pop function. push(@nodes) Equivalent to perl's push function. append($nodelist) Given a nodelist, appends the list of nodes in $nodelist to the end of the current list. shift() Equivalent to perl's shift function. unshift(@nodes) Equivalent to perl's unshift function. prepend($nodelist) Given a nodelist, prepends the list of nodes in $nodelist to the front of the current list. map($coderef) Equivalent to perl's map function. grep($coderef) Equivalent to perl's grep function. sort($coderef) Equivalent to perl's sort function. Caveat: Perl's magic $a and $b variables are not available in $coderef. Instead the two terms are passed to the coderef as arguments. reverse() Equivalent to perl's reverse function. foreach($coderef) Inspired by perl's foreach loop. Executes the coderef on each item in the list. Similar to "map", but instead of returning the list of values returned by $coderef, returns the original NodeList. reduce($coderef, $init) Equivalent to List::Util's reduce function. $init is optional and provides an initial value for the reduction. Caveat: Perl's magic $a and $b variables are not available in $coderef. Instead the two terms are passed to the coderef as arguments. perl v5.14.2 2012-06-20 XML::LibXML::NodeList(3pm)
All times are GMT -4. The time now is 05:01 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy