Your solution is incorrect, regardless (as was mine). The problem requested printing characters 11-20 if a match is found; that second substr call returns 11-30 (the third argument is length, not an index). The 20 should be a 10.
Hi I am very new to KSH programming
and need some help with finding a string in an error log
currently i am doing
cat FTP_LOG.lis | grep Warning
which gives me
Warning: Authentication failed. Remaining authentication methods: 'publickey,pas
I want to only pick up the test between the... (4 Replies)
i am very new to UNIX
plz help me in this scenario
i have two text files as below
file1.txt
name=Rajakumar.
Discipline=Electronics and communication.
Designation=software Engineer.
file2.txt
name=Kannan.
Discipline=Mechanical.
Designation=CADD Design Engineer.
... (6 Replies)
I just want to add a particular string in text file using shell script
text file format
1 columns-10
2 text=89
3 no<>
4
5 test-9876
6 size=9
string need to insert in 4th line
<switch IP='158.195.2.567' port='5900' user='testc' password='asdfrp' Code='8'>
After inserting the... (8 Replies)
Hi, I have a single colum file and I need to reformat the file so that it creates a new line every time it come to an IP address and the following lines are corresponding rows until it comes to the next IP address.
I want to turn this
172.xx.xx.xx
gwpusprdrp02_pv
seinwnprd03... (7 Replies)
Hi,
I have 80 large files, from which I want to get a specific value to run a Bash script. Firstly, I want to get the part of a file which contains this:
Name =A
xxxxxx
yyyyyy
zzzzzz
aaaaaa
bbbbbb
Value = 57
This is necessary because in a file there are written more lines which... (6 Replies)
I am having a text file which is having more than 200 lines.
EX:
001010122 12000 BIB 12000 11200 1200003
001010122 2000 AND 12000 11200 1200003
001010122 12000 KVB 12000 11200 1200003
In the above file i want to search for string KVB and add/replace... (1 Reply)
Dear All
I am having a text file which is having more than 200 lines.
EX:
001010122 12000 BIB 12000 11200 1200003
001010122 2000 AND 12000 11200 1200003
001010122 12000 KVB 12000 11200 1200003
In the above file i want to search for string KVB... (5 Replies)
I need some help. I would like to read in a text file.
Take a variable such as ROW-D-01, compare it to what's in one line in the text file such as PROD/VM/ROW-D-01 and only input PROD/VM into a variable without the /ROW-D-01.
Is this possible? any help is appreciated. (2 Replies)
Dear All,
assume that we have a text file or a folder of files,
I want to find this pattern followers*.csv in the text file , and get * as the output.
There are different matches and * means every character.
Thank you in advance.
Best,
David (1 Reply)
Discussion started by: davidfreed
1 Replies
LEARN ABOUT MOJAVE
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 v5.18.2 2013-11-04 bytes(3pm)