Apart from solving above line length problems, here's something to start with if the problem doesn't hit system limits:
Most of the processing for the first line is for sorting the columns; my awk doesn't have a sorting algortihm, unfortunately.
I have a pipe delimited file. Key is field 2, date is field 5 (as example, my real file is more complicated of course, but the KEY and DATE are accurate)
There can be duplicate rows for a key with different dates.
I need to keep only rows with latest date in this case.
Example data: ... (4 Replies)
Hi
I need to do some thing like "find and insert before that " in a file which contains many records. This will be clear with the following example.
The original data record should be some thing like this
60119827 RTMS_LOCATION_CDR INSTANT_POSITION_QUERY 1236574686123083rtmssrv7 ... (8 Replies)
Hello All:
I've file in below format. File name is "FIRSTN.TBL":
AAAAAA N
BBBBBBBBBBBBBBBBBBBBBBB N
.
.
.
.
ZZZZZZZZZZZZZZZZZZZZZZZZZZ N
My file row length is 40 characters and my second column will start from 25th column and it is only... (3 Replies)
Hi, I need somebody's help with sorting data with awk.
I've got a file:
10 aaa 4584
12 bbb 6138
20 ccc 4417
21 ddd 7796
10 eee 7484
12 fff ... (5 Replies)
Hello,
How to sort each row in a document with numerical values and with more than one row. Example
Input data (file1.txt):
4 6 8 1 7
2 12 9 6 10
6 1 14 5 7
and I want the the output to look like this(file2.txt):
1 4 6 7 8
2 6 9 10 12
1 5 6 7 14
I've tried
sort -n file1.txt >... (12 Replies)
how can i sort the table based on first row? thanks in advance
input
name d b c a
l l1 l2 l3 l4
l1 1 2 3 4
l2 2 2 2 1
l3 1 1 2 2ouput
name a b c d
l1 l4 ... (4 Replies)
In the awk below I am trying to remove all instances after a ; (semi-colon) or , (comma) in the ANN= pattern. I am using gsub
to substitute an empty string in these, so that ANN= is a single value (with only one value in it the one right after the ANN=). Thank you :).
I have comented my awk and... (11 Replies)
Discussion started by: cmccabe
11 Replies
LEARN ABOUT CENTOS
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This pragma reflects early attempts to incorporate Unicode into perl and has since been superseded.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 v5.16.3 2013-02-26 bytes(3pm)