Hi, experts,
I would like to create a function that can calculate the total number of lines in a saved text file and delete specific lines in that particular file (I only want the last few lines). Hav anybody have the experience and giv me a hand in this? (9 Replies)
Hi,
I have a file ( all_users.ldif ) of the following format:
cn=orcladmin, cn=Users, dc=maximus,dc=com
cn=PUBLIC, cn=Users, dc=maximus,dc=com
cn=portal,cn=users,dc=maximus,dc=com
cn=portal_admin,cn=users,dc=maximus,dc=com
cn=uddi_publisher,cn=Users,dc=maximus,dc=com... (4 Replies)
Hi
I want to extract certain text between two line numbers like
23234234324 and
54446655567567
How do I do this with a simple sed or awk command?
Thank you.
---------- Post updated at 06:16 PM ---------- Previous update was at 05:55 PM ----------
found it:
sed -n '#1,#2p'... (1 Reply)
I am attempting to insert multiple lines of text into a specific place in a text file based on the lines above or below it.
For example, Here is a portion of a zone file.
IN NS ns1.domain.tld.
IN NS ns2.domain.tld.
IN ... (2 Replies)
Let's say we have a file containing:
alllllsadfsdasdf
qwdDDDaassss
ccxxcxc#2222
dssSSSSddDDDD
D1Sqn2NYOHgTI
Hello
Alex
ssS@3
Ok, and let's say we want to delete all words from D1Sqn2NYOHgTI and back, this means
to delete the words (and the lines of them) :
alllllsadfsdasdf... (2 Replies)
Hello.
My file is like this:
a
b
c
d
e
f
g
h
i
I want to delete all lines after the 3rd line, means after the "c". Is there any way to do this? The lines differ between them and the lines I want to delete does not have a specific word, or the lines I want to keep (a,b,c) does not have a... (4 Replies)
Hi all,
I hope an expert tells me that there is a way to get ride of the certain lines in my files which have no specific string on them but fixed length.
It's the original pattern:... (9 Replies)
Dear everyone,
I have a file with 900 lines (there is only numbers in one line, no string),
I only need the lines 2+3n (n=0,1...296), i.e line 2, 5, 8, 11...888.
I tried google but only the results such as how to delete all the odd lines or all the even lines with 'awk' command.
Thanks in... (4 Replies)
Gents,
I am trying to delete all lines which start with "H" character, but keeping the fist header. Example In the input file I will delete all lines starting from line 8 which contents character "H" to the end of the file.
I try
sed '8,10000{/^H/d;}' file
But as don't know the end... (1 Reply)
This is an extract from a large file. The lines that start with fc are ports on a fabric switch. In between each fc port there is information about the port.
fc2/12 is up
Port description is SEIEDISCOVER-3
Speed is 4 Gbps
fc2/13 is down (Administratively down)
fc2/14 is up
Port... (1 Reply)
Discussion started by: kieranfoley
1 Replies
LEARN ABOUT DEBIAN
tree::simple::visitor::findbypath
Tree::Simple::Visitor::FindByPath(3pm) User Contributed Perl Documentation Tree::Simple::Visitor::FindByPath(3pm)NAME
Tree::Simple::Visitor::FindByPath - A Visitor for finding an element in a Tree::Simple hierarchy with a path
SYNOPSIS
use Tree::Simple::Visitor::FindByPath;
# create a visitor object
my $visitor = Tree::Simple::Visitor::FindByPath->new();
# set the search path for our tree
$visitor->setSearchPath(qw(1 1.2 1.2.2));
# pass the visitor to a tree
$tree->accept($visitor);
# fetch the result, which will
# be the Tree::Simple object that
# we have found, or undefined
my $result = $visitor->getResult() || die "No Tree found";
# our result's node value should match
# the last element in our path
print $result->getNodeValue(); # this should print 1.2.2
DESCRIPTION
Given a path and Tree::Simple hierarchy, this Visitor will attempt to find the node specified by the path.
METHODS
new There are no arguments to the constructor the object will be in its default state. You can use the "setSearchPath" and "setNodeFilter"
methods to customize its behavior.
includeTrunk ($boolean)
Based upon the value of $boolean, this will tell the visitor to include the trunk of the tree in the search as well.
setSearchPath (@path)
This is the path we will attempt to follow down the tree. We will do a stringified comparison of each element of the path and the
current tree's node (or the value returned by the node filter if it is set).
setNodeFilter ($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.
getResult
This method will return the tree found at the specified path (set by the "setSearchPath" method) or "undef" if no tree is found.
getResults
This method will return the tree's that make up the path specified in "setSearchPath". In the case of a failed search, this can be used
to find the elements which did successfully match along the way.
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 2005-10-24 Tree::Simple::Visitor::FindByPath(3pm)