Hello,
I am new to shell scripting. I want to optimize my one of the script.
I have one file and i want to remove selected zones for domains from that file.In this file i have almost 3500 zones for domains.Sample data for the file....
named.backup... (0 Replies)
Good morning,
Sir's i would like to ask for help regarding to my awk and loop problem, a script that will check my files a and b then if it will see there was a time below 3am it will echo the file that contains below 3am file, for this example it will redirect the file a to an output.
$ cat a... (3 Replies)
Hi All,
I've got some strange behaviour going on when trying to manipulate a file that contains spaces.
My input file looks something like this:
xxxxxxxxx,yyyy,sss sss sss,bbbbbbb
If I use awk:
When running from the command line I get:
sss sss sss
But when running from a... (7 Replies)
I cut specific cell(row=2, column=1) in my excel file and created new file using following script.
awk -F"," 'NR ==2 {print $1}' file1.csv > file1_new.csv
awk -F"," 'NR ==2 {print $1}' file2.csv > file2_new.csv
and so on....
The problem is that I have thousand files and I have to... (4 Replies)
hi
i was trying to optimize one script and i came across this problem .. i am putting some pseudo code here
$ >cat a.sh
ls | while read I
do
i=$(($i + 1))
done
echo "total no of files : "
$ >ksh a.sh
total no of files :
$ >bash a.sh
total no of files :
why is... (1 Reply)
Hi friends,
I have a script that sets the env variable path based on different conditions.
Now the new path variable setting should not done in the same terminal or same shell.
Only a new terminal or new shell should have the new path env variable set.
I am able to do this only as follows:
>cd... (1 Reply)
Dear All,
I have a file with 1s and 0s with tab delimited file of approximately 535 lines and 1000 columns. I would like to print the lines, which are having 1s in it and i don't want to print the links with complete 0s. Is it possible to do the above one using awk with some looping.
Need... (2 Replies)
Sorry if this is a super simple issue, but am extremely new to this and am trying to teach myself as I go along. But can someone please help me out?
I have a data file similar to this for many samples, for all chromosomes
Sample Chr bp p roh
Sample1 1 49598178 0 1... (14 Replies)
Hi Experts,
I want to check in table that if third column value is "bhu" & if it is greater than 500 it will send mail
other wise there will be no mail. but as per my script mails are still coming even value is below 500 with one blank mail(without any content) with subject line"test mail".
I... (12 Replies)
Hi,
input:
AAA|1
my script (the function is just an example):
gawk 'BEGIN{FS=OFS="|"}
function repeat(str, n, rep, i){
for(i=1; i<=n; i++)
rep=rep str
return rep
}
{
variable_1=repeat($1,$2)
variable_2=repeat($1,$2+1)
variable_3=repeat($1,$2+3)
... (5 Replies)
Discussion started by: beca123456
5 Replies
LEARN ABOUT SUSE
bytes
bytes(3pm) Perl Programmers Reference Guide bytes(3pm)NAME
bytes - Perl pragma to force byte semantics rather than character semantics
NOTICE
This pragma reflects early attempts to incorporate Unicode into perl and has since been superseded. It breaks encapsulation (i.e. it
exposes the innards of how the perl executable currently happens to store a string), and use of this module for anything other than
debugging purposes is strongly discouraged. If you feel that the functions here within might be useful for your application, this possibly
indicates a mismatch between your mental model of Perl Unicode and the current reality. In that case, you may wish to read some of the perl
Unicode documentation: perluniintro, perlunitut, perlunifaq and perlunicode.
SYNOPSIS
use bytes;
... chr(...); # or bytes::chr
... index(...); # or bytes::index
... length(...); # or bytes::length
... ord(...); # or bytes::ord
... rindex(...); # or bytes::rindex
... substr(...); # or bytes::substr
no bytes;
DESCRIPTION
The "use bytes" pragma disables character semantics for the rest of the lexical scope in which it appears. "no bytes" can be used to
reverse the effect of "use bytes" within the current lexical scope.
Perl normally assumes character semantics in the presence of character data (i.e. data that has come from a source that has been marked as
being of a particular character encoding). When "use bytes" is in effect, the encoding is temporarily ignored, and each string is treated
as a series of bytes.
As an example, when Perl sees "$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)