i want to add a string in a very top of a file without using VI or SED or AWK
this is what ive done:
(echo '0a'; echo 'LINE OF TEXT'; echo '.'; echo 'wq') | ed -s myfile
to add astrng right in the middle i could have count the lines of the file and just chenge the address.
... (6 Replies)
I am trying to strip out certain characters from a string on both (left & right) sides. For example, line=see@hear|touch, i only want to echo the "hear" part. Well i have tried this approach:
line=see@hear|touch
templine=${line#*@} #removed "see@"
echo ${templine%%\|*} #removed... (4 Replies)
Hi,
I want to write a script that takes a file and a string as params and adds the string to the middle line of the file. Also, I want to output the results back to the original file passed without using temp files.
I am very much new to UNIX so this is all a little like black magic to me at... (15 Replies)
I'm hoping that there is a way to do this. I'm sure I won't be able to get the answer I need on the deadline I need it...but at least I'll learn how to solve this problem.
I have a file that looks like this:
(00:14:25\$ head -27 QNHDSPACEDVR
Name: PollDhctAVFSInfo 00:0F:21:4B:00:6A
Name:... (2 Replies)
Hello all!
I'm trying to put together a small script that will take in a file name and attach a datestamp to the end of it (but before the file type extension).
To illustrate...
Before:
filename.txt
anotherfilename.txt
After:
filename_20090724.txt
anotherfilename_20090724.txt
... (7 Replies)
I have a file (test.dat) which contains data like this
459|199811047|a |b |shan
kar|ooty|
460|199811047|a |bv |gur
u|cbe|
but I need it like:
459|199811047|a |b |shankar|ooty|
460|199811047|a |b |guru|cbe|
While reading the data from this file, I don't want to remove newline from the end of... (4 Replies)
Hi all..
I have a text file which looks like below:
abcd
efgh
ijkl
(blank space)
I need to remove only the last (blank space) from the file. When I try wc -l the file name,the number of lines coming is 3 only, however blank space is there in the file.
I have tried options like... (14 Replies)
Hi Folks!
I hope you can help me figure this out. I need to print a record which contains the contents of a config file. The contents of the config file should be found within the 21st and the 30th position of the fixed width reference file.
Config File:
aaaa
bbbb
cccc
Reference... (3 Replies)
Hi,
I need to correct href portion of the lines to edit out spaces from the line starting with position "<a href=" and ending at "target="
Below are 2 examples of extra space added by the server:
<td width=251 colspan=9 rowspan=22> <font size=2 face="courier"><tt><style>{font:7pt Courier ... (4 Replies)
Discussion started by: friedmi
4 Replies
LEARN ABOUT DEBIAN
tree::simple::visitor::breadthfirsttraversal
Tree::Simple::Visitor::BreadthFirstTraversal(3pm) User Contributed Perl Documentation Tree::Simple::Visitor::BreadthFirstTraversal(3pm)NAME
Tree::Simple::Visitor::BreadthFirstTraversal - A Visitor for breadth-first traversal a Tree::Simple hierarchy
SYNOPSIS
use Tree::Simple::Visitor::BreadthFirstTraversal;
# create an visitor
my $visitor = Tree::Simple::Visitor::BreadthFirstTraversal->new();
# pass our visitor to the tree
$tree->accept($visitor);
# print our results
print join ", " => $visitor->getResults();
# this will print this:
# 1, 2, 3, 1.1, 1.2, 2.1, 3.1, 1.1.1
# assuming your tree is like this:
# 1
# 1.1
# 1.1.1
# 1.2
# 2
# 2.1
# 3
# 3.1
DESCRIPTION
This implements a breadth-first traversal of a Tree::Simple hierarchy. This can be an alternative to the built in depth-first traversal of
the Tree::Simple "traverse" method.
METHODS
new There are no arguments to the constructor the object will be in its default state. You can use the "setNodeFilter" method to customize
its behavior.
includeTrunk ($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 2005-07-14 Tree::Simple::Visitor::BreadthFirstTraversal(3pm)