Hi,
I'm trying to write a function that redirects the contents of an
array to a file. The array contains the lines of a data file with
white space.
The function seems to preserve all white space when redirected
except that it seems to ignore newlines. As a consequence, the
elements of the... (7 Replies)
Hi Guys,
I have a file which has numbers in it separated by newlines as follows:
1.113
1.456
0.556
0.021
-0.541
-0.444
I am using the following code to store these in an array in bash:
FILE14=data.txt
ARRAY14=(`awk '{print}' $FILE14`) (6 Replies)
I have one file "file.a.b.c-d.r" that I would like to use to spawn 4 other files:
"file.a.b.1-A.r"
"file.a.b.1-B.r"
"file.a.b.1-C.r"
"file.a.b.1-D.r"
where the field "c-d" changes into my 1 and A-D.
I was doing this manually at the prompt with
> cp "file.a.b.c-d.r" "file.a.b.1-A.r"
>... (13 Replies)
I have figured out how to grep the file like this:
echo `grep $(date +'%Y-%m-%d') Cos-01.csv | cut -d',' -f1`
The above line does echo the correct information from the lines in which my search criteria is found.
Now I am trying to get that information (Yes, just one column of every line) into... (6 Replies)
Writing a bash script for use with Geektool, pulls the battery info, and shuffles images around so that an Image geeklet can display the correct expression as the desktop background. (Eventually I intend to make it more intricate, based on more variables, and add more expressions)
I'm extremely... (1 Reply)
Hi,
I'm trying to write a bash script that takes a file and passes each line from the file into an array with elements separated by column.
For example:
Sample file "file1.txt":
1 name1 a first
2 name2 b second
3 name3 c third
and have arrays such as:
line1 = ( "1" "name1" "a"... (3 Replies)
for a in {1..100}
do
awk '{ sum+=$a} END {print sum}' a=$a file1 > file2
done
I know I will get only one number if following the code above, how can I get 100 sum numbers in file2? (2 Replies)
I'm working on a bash script to finish uploading a file.
I need a way to get $filesize so that "restart $filesize" will work.
Here is my script:
ftp -n -v <<END_SCRIPT
open ftp.$domain
user $user@$domain $password
size $file
restart $filesize
put $file
quit
END_SCRIPTWayne Sallee... (9 Replies)
Hi Team,
i have a web ui where user will be passing values and the output will be saved to a file say test with the following contents .
These below mentioned values will change according to the user_input
Just gave here one example
Contents of file test is given below
Gateway... (7 Replies)
Hi guys and gals...
MacBook Pro.
OSX 10.13.2, default bash terminal.
I have a flat file 1920 bytes in size of whitespaces only. I need to put every single whitespace character into a bash array cell.
Below are two methods that work, but both are seriously ugly.
The first one requires that I... (7 Replies)
Discussion started by: wisecracker
7 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)