Dear All,
I want to compare column 3 and column 4 of files(File1 and File2) and want to get the matched records in one file and rejected records in another file.I have tried an awk script,but as Iam not good in it,I cant able to continue.Can anyone help me in this one.
File 1... (0 Replies)
I am trying to write a script that will parse out the e-mail address of a person from the name of a file in a directory.
Example:
filename is:
/home/myname/first.middle.last@email.com.xls
I want to extract just the email address and mail the file to that address.
I want to send the... (6 Replies)
How do I alter this command so that it prints only the second comma delimited field from line number 3? Secondly, how do you redirect the output to a variable called TEST?
Thanks
(cat BATCH007.TXT | awk 'BEGIN { FS = "," } ; {print $2 }') (5 Replies)
Hi ,
i have a file a.txt like this:
far
near
veryfar
toonear
typeset var1=veryfar
to extract the text between two strings i use the following command :
awk '/far/,$veryfar/' a.txt
its not working
can nyone tell pls whats wrong in it ?
i doubt can we use variable in awk like this... (3 Replies)
I have a log file monitor script that checks through a log file for a string. I use awk to search the log file, starting at the last checked line, for the specified string and then output the count and the last row number checked. The part of the script that does all the work is here:
set --... (6 Replies)
Dear all,
I am new to use unix. I run the following command and got the error. Anyone knows how should I modify the command. Thanks a lot!
$
for chr in 'seq 1 23';
do
awk 'BEGIN {print "T","pheno";}{print "M",$2}' out_${chr}.map > dat_${chr}.dat;
done
error message:... (2 Replies)
Hi Experts,
I have a file (file 1) with several columns and I need to create 2 files based on the data of 20th column of file 1.
Criteria 1 : If the 20th field of file1 is empty , copy the entire records to file 2.
I am successfully able to do this with the following awk code :
awk... (2 Replies)
Hi..
have a file as below, appreciate if someone can help on this
143|500| 10| 23353 22131 23355 23354 23358 23352 23357 23350 23349 23351| RAID5
213|1008| 9| 22419 22412 221 22413 22414 22416 22417 22415 22418| RAID6
1088|500| 5| 22243 22240 22244 22242 22241| RAID5
322|1200| 12|... (6 Replies)
Discussion started by: richard0@rediff
6 Replies
LEARN ABOUT SUSE
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)