Hello,
Im trying to extract a portion of a big file.
Using unique pattern /occurrence ,
(ex. loginname1,logoff and loginname2,logoff ),
I like to print the lines that contain the patterns and the lines between them.
Also, create a file for every login occurrence.
Thanks for everyone's... (1 Reply)
Hi, everyone,
Now I have a ".csv" file and I want to extract a string-like date value from the file, say, it is in the 2nd row of the file and it is in the fixed context like:
"
This is the file title, //Row 1
The lastest update happened on: 10-Mar-2006 //Row2
....//other irrelavent rows
"... (6 Replies)
Dear Members,
I have a huge file generated by the command 'whois' for hundred of IPs. Each section in the file starts with
I want to extract those lines which start with any of these words: Input:
OrgName: University of C
OrgID: U1
Address: OIT
Address: NH
City: ... (5 Replies)
Hi All,
I have a file of the following format.
<?xml version='1.0' encoding='utf-8'?>
<tomcat-users>
<role rolename="tomcat"/>
<role rolename="role1"/>
<role rolename="manager"/>
<role rolename="admin"/>
<user username="tomcat" password="tomcat" roles="tomcat"/>
<user... (5 Replies)
Hi All,
I have a requirement where I have to search the file with some text say "Exception". This exception word can be repeated for more then 10 times.
Suppose the "Exception" word is repeated at line numbers say x=10, 50, 60, 120. Now I want to extract all the lines starting from x-5 to... (3 Replies)
Hello everybody,
Here is my problem : I cannot find a way to extract data from a particular file and more precisely I cannot extract the result of my awk script to an external file because I am currently working on HP-UX.
I would like a simple script (without awk) which asks for a date like... (4 Replies)
Hi,
I have three files as below:
AA.DAT20110505063903.Z
AA.DAT20110405062903.Z
AA.DAT20110305061903.Z
All the above files are appended with Date and timestamp in compressed format.
I need to extract AA.DAT20110505063903.Z(which is the latest file) from one server and uncompress it... (2 Replies)
Hii ,I am new to Unix ,i have a flat file which is (fixed length) sitting in unix,Which is holding the data for a table.I want to extract one column(length7-10) on the basis of another column(length13-15) and want only one single row
Example:
Below is the sample of flat file.
1111 AAAA 100 ... (4 Replies)
Hi Freinds,
I have a file1.txt in the following format
File1.txt
I want to get 2 files from the above file filextra.txt should have the lines which are ending with "<" and remaining lines in the filecompare.txt file.
Please help. (3 Replies)
FILE_ID extraction from file name and save it in CSV file after looping through each folders
My files are located in UNIX Server, i want to extract file_id and file_name from each file .and save it in a CSV file. How do I do that?
I have folders in unix environment, directory structure is... (15 Replies)
Discussion started by: princetd001
15 Replies
LEARN ABOUT MOJAVE
bytes5.18
bytes(3pm) Perl Programmers Reference Guide bytes(3pm)NAME
bytes - Perl pragma to force byte semantics rather than character semantics
NOTICE
This pragma reflects early attempts to incorporate Unicode into perl and has since been superseded. It breaks encapsulation (i.e. it
exposes the innards of how the perl executable currently happens to store a string), and use of this module for anything other than
debugging purposes is strongly discouraged. If you feel that the functions here within might be useful for your application, this possibly
indicates a mismatch between your mental model of Perl Unicode and the current reality. In that case, you may wish to read some of the perl
Unicode documentation: perluniintro, perlunitut, perlunifaq and perlunicode.
SYNOPSIS
use bytes;
... chr(...); # or bytes::chr
... index(...); # or bytes::index
... length(...); # or bytes::length
... ord(...); # or bytes::ord
... rindex(...); # or bytes::rindex
... substr(...); # or bytes::substr
no bytes;
DESCRIPTION
The "use bytes" pragma disables character semantics for the rest of the lexical scope in which it appears. "no bytes" can be used to
reverse the effect of "use bytes" within the current lexical scope.
Perl normally assumes character semantics in the presence of character data (i.e. data that has come from a source that has been marked as
being of a particular character encoding). When "use bytes" is in effect, the encoding is temporarily ignored, and each string is treated
as a series of bytes.
As an example, when Perl sees "$x = chr(400)", it encodes the character in UTF-8 and stores it in $x. Then it is marked as character data,
so, for instance, "length $x" returns 1. However, in the scope of the "bytes" pragma, $x is treated as a series of bytes - the bytes that
make up the UTF8 encoding - and "length $x" returns 2:
$x = chr(400);
print "Length is ", length $x, "
"; # "Length is 1"
printf "Contents are %vd
", $x; # "Contents are 400"
{
use bytes; # or "require bytes; bytes::length()"
print "Length is ", length $x, "
"; # "Length is 2"
printf "Contents are %vd
", $x; # "Contents are 198.144"
}
chr(), ord(), substr(), index() and rindex() behave similarly.
For more on the implications and differences between character semantics and byte semantics, see perluniintro and perlunicode.
LIMITATIONS
bytes::substr() does not work as an lvalue().
SEE ALSO
perluniintro, perlunicode, utf8
perl v5.18.2 2013-11-04 bytes(3pm)