Hi,
i am new to perl scripting.. i am still learing it.. i am asked to write a perl script which should compare 2 coloums of 2 different files. if those 2 coloumn are same the script should store the both the lines in 2 diff files.
these are files,
file 1:
21767016 226112 char
19136520... (3 Replies)
need to compare 2 csv files and report should containg number of matching lines,different lines ,missing lines in one file using perl.
I dont want to use read line by line and scan thru the second file for matching line ,as this logic was so time consuming .Any ideas.i need the soultion badly .... (2 Replies)
I need to compare 2 csv files and report should containg number of matching lines,different lines ,missing lines in one file using perl.
I dont want to use read line by line and scan thru the second file for matching line ,as this logic was so time consuming .Can other ideas .please respond asap... (2 Replies)
Hi all,
Am new to scripting. So i just need your ideas to help me out. Here goes my requirement.
I have two csv files
1.csv 2.csv
abc,1.24 abc,1
def,2.13 def,1
I need to compare the first column of 1.csv with 2.csv and if matches then need to compare... (2 Replies)
We are testing an application that accesses two tables: A and B. I am to write a script to validate the ouput files of this application.The application marks any account that has become overdue as per rule. When it runs, it updates the overdue flag in the A table according to the following rules:
... (1 Reply)
hi,
As such I am new to perl on google search I found a code for Perl script to compare two files and print differences between them and instead of prinintg I want to store the diff. in a outputfile so can sombody provide assistance upon this from where can I edit in script to store the diff in... (1 Reply)
Hi All,
I've got in a situation where I need to convert .xlsx or .xls formatted files into simple text file or .csv file.
I've found many options but doing this using PERL script is the best way I believe.I'm in AIX box.
Perl code should have 2 params while running. i.e
perl... (1 Reply)
Hi Guys,
I need to write a script to compare the count of two csv files each having 5 columns.
Everyday a csv file is recived.
Now we need to compare the count of todays csv file with yesterday's csv file and if the total count of records is same in todays csv file and yesterday csv file out... (3 Replies)
Example:
I have files in below format
file 1:
zxc,133,joe@example.com
cst,222,xyz@example1.com
File 2 Contains:
hxd
hcd
jws
zxc
cst
File 1 has 50000 lines and file 2 has around 30000 lines :
Expected Output has to be :
hxd
hcd
jws (5 Replies)
Discussion started by: TestPractice
5 Replies
LEARN ABOUT LINUX
bytes
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 v5.12.1 2010-04-26 bytes(3pm)