I'm trying to match the end of line character in a shell script under bash. What I have done it got is a loop that reads each line of a file into a temp variable and then I get each letter of that variable and do some work on it. One think I want to do it check if the character I checking if the... (1 Reply)
How do i determine what the end of the line character is in a text file. for eg. is it \n or \f or \t etc..
Is there a unix command for this? (5 Replies)
Hi, sorry for being dumb but I have a file with a variable amount of records (day to day it differs) but is fixed at 80 characters wide. Unfortunately the 80th and last charachter in each line is a "^M" carriage return character which i want to get rid of. Is there a really easy command that i can... (6 Replies)
Hi All,
I have written a korn script (code pasted below). It is giving the error while debugging "new.sh: syntax error at line 62: `end of file' unexpected".
I have re-written the whole code in VI and explored all help related to this error on this Unix forum and tried it. Somehow, I could... (7 Replies)
I have a file with different directories in it. I would need to move one line within the file to the end of the list. Also not there could be blank line in the middle of it. Example
/vol/fs1
/vol/fs2
/vol/fs3
/vol/fs4
/vol/fs5
/vol/fs6
/vol/fs7
So I would need /vol/fs2... (3 Replies)
Hi friends ,
I want to know how does a shell script recognize the end of a line? . i have hunddres of proccedure to test where i want to ingnore the comments which starts with "--" .. it can start from the middle of the lines also. for example::
select * from table1; -- getting... (5 Replies)
Need to add end of line character to last record in a fixed width file.
When i take the record length of each line, for all the records it gives example like 200 except the last line as 199.
Due to this my other script fails.
Please help me on this. (4 Replies)
Hai,
I have got a small requirement in my script. and i am using bash shell. I need to add a dot (.) for some particular line in a file. Say for example,
$Cat rmfile
1 This is line1
2 This is line2
3 This is line3
O/p should be :
$Cat rmfile
1 This is line1
2 This is line2. #... (2 Replies)
hello everyone,
im new here, and also programming with awk, sed and grep commands on linux.
In my text i have many lines with this config:
1 1 4 3 1 1 2 5
2 2 1 1 1 3 1 2
1 3 1 1 1 2 2 2
5 2 4 1
3 2 1 1 4 1 2 1
1 1 3 2 1 1 5 4
1 3 1 1... (3 Replies)
I have several line in a text file. for example
I like apple;
I like apple
I like orange;
Output: I like apple
I try to useif grep -q "!\;$"; then (Not work)
Please use CODE tags when displaying sample input, sample output, and code segments (as required by forum rules). (1 Reply)
Discussion started by: cmdcmd
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)