I got a sample file like this.
$ cat test
12|13|100|s
12|13|100|s
100|13|100|s
12|13|100|s
I want to replace all 100 by 2000 only in 3rd field using "awk"
This is replacing all 100's :-(
$ awk -F "|" '{gsub( /100/,"2000");print}' test
12|13|2000|s
12|13|2000|s
2000|13|2000|s... (5 Replies)
I want to sort alphabetically on the first field and sort in descending numerical order on the 2nd field. With a normal "sort -r -n" it does this:
abc ||| 5e-05 ||| bla
abc ||| 3 ||| ble
def ||| 1 ||| abc
def ||| 0.2 ||| def
As you can see it ignores the fact that 5e-05 is actually 0.00005... (1 Reply)
java....4059... compsite 62u IPv4 170747 TCP *:9400 (LISTEN)
java...... 05... compsite 109u IPv4 171216 TCP *:9401 (LISTEN)
This is Joust formated like this
Please Repace "." with space" "
All are Right Justfied
Output :- 4058 and 05 so that i can kill this (1 Reply)
need a one liner to compare 2nd and 3rd field and print values that are not matched in 2nd field
Input
col 2 col 3
1.1.1.1 11.11.11.11
8.8.8.8 0.0.0.0
3.3.3.3 2.2.2.2
7.7.7.7 3.3.3.3
5.5.5.5 1.1.1.1
4.4.4.4
6.6.6.6
9.9.9.9
output
7.7.7.7 ... (12 Replies)
Hi All,
I have a text file with three columns. I would like a simple script that removes lines in which column 1 has duplicate entries, but use the largest value in column 3 to decide which one to keep. For example:
Input file:
12345a rerere.rerere len=23
11111c fsdfdf.dfsdfdsf len=33 ... (3 Replies)
Hi,
I have a file (sorted by sort) with 8 tab delimited columns. The first column contains duplicated fields and I need to merge all these identical lines.
My input file:
comp100002 aaa bbb ccc ddd eee fff ggg
comp100003 aba aba aba aba aba aba aba
comp100003 fff fff fff fff fff fff fff... (5 Replies)
I've got a file that looks like this (the whitespace between commas is intentional):
123456789,12,JOHN H DOE ,DOE/JOHN H ,,,DOE/JOHN H ,,,,,123 FAKE STREET ,SPRINGFIELD,XX,
I want to strip just the first name out of the third field so it reads "JOHN,". So far I... (6 Replies)
Hi all!
I have 10.000 files having generally this format:
text text text
text num text num text num
text text text GAP number text text
text num text num text num RMS num
text num text num text num
...
what I want is to copy the files if the GAP number is lower than a value e.g. <100... (5 Replies)
Hi,
For example:
I have:
HostA,XYZ
HostB,XYZ
HostC,ABC
I would like the output to be:
HostA,HostB: XYZ
HostC:ABC
How can I achieve this?
So far what I though of is: (1 Reply)
Discussion started by: alvinoo
1 Replies
LEARN ABOUT DEBIAN
tree::simple::visitor::preordertraversal
Tree::Simple::Visitor::PreOrderTraversal(3pm) User Contributed Perl Documentation Tree::Simple::Visitor::PreOrderTraversal(3pm)NAME
Tree::Simple::Visitor::PreOrderTraversal - A Visitor for pre-order traversal a Tree::Simple hierarchy
SYNOPSIS
use Tree::Simple::Visitor::PreOrderTraversal;
# create an visitor
my $visitor = Tree::Simple::Visitor::PreOrderTraversal->new();
# pass our visitor to the tree
$tree->accept($visitor);
# print our results
print join ", " => $visitor->getResults();
# this will print this:
# 1 1.1 1.1.1 1.2 2 2.1 3 3.1
# assuming your tree is like this:
# 1
# 1.1
# 1.1.1
# 1.2
# 2
# 2.1
# 3
# 3.1
DESCRIPTION
Pre-order traversal is a depth-first traversal method in which the sub-tree's are processed after the parent. It is essentially a wrapper
around the base Tree::Simple::Visitor class, and is a separate module here for completeness. (If you have a post-order, you should have a
pre-order too).
METHODS
new There are no arguments to the constructor the object will be in its default state. You can use the "setNodeFilter" method to customize
its behavior.
includeTrunk ($boolean)
Based upon the value of $boolean, this will tell the visitor to include the trunk of the tree in the traversal as well.
setNodeFilter ($filter_function)
This method accepts a CODE reference as its $filter_function argument and throws an exception if it is not a code reference. This code
reference is used to filter the tree nodes as they are collected. This can be used to customize output, or to gather specific
information from a more complex tree node. The filter function should accept a single argument, which is the current Tree::Simple
object.
visit ($tree)
This is the method that is used by Tree::Simple's "accept" method. It can also be used on its own, it requires the $tree argument to be
a Tree::Simple object (or derived from a Tree::Simple object), and will throw and exception otherwise.
getResults
This method returns the accumulated results of the application of the node filter to the tree.
BUGS
None that I am aware of. Of course, if you find a bug, let me know, and I will be sure to fix it.
CODE COVERAGE
See the CODE COVERAGE section in Tree::Simple::VisitorFactory for more inforamtion.
SEE ALSO
These Visitor classes are all subclasses of Tree::Simple::Visitor, which can be found in the Tree::Simple module, you should refer to that
module for more information.
AUTHOR
stevan little, <stevan@iinteractive.com>
COPYRIGHT AND LICENSE
Copyright 2004, 2005 by Infinity Interactive, Inc.
<http://www.iinteractive.com>
This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.
perl v5.10.1 2010-02-18 Tree::Simple::Visitor::PreOrderTraversal(3pm)