Adding a columnfrom a specifit line number to a specific line number
Hi,
I have a huge file & I want to add a specific text in column. But I want to add this text from a specific line number to a specific line number & another text in to another range of line numbers.
To be more specific: lets say my file has 1000 lines & 4 Columns. I want to add text "Hello" to 5th column but from line 1 to line 200. & I want to add another text "goodbye" to 5th column of the same file from line 201 to 800 & another text "live" again to 5th column to the same file from line 801 to 1000.
I know I can use sed to add a column to my file but I don't know how to tell sed to add this column to from line & to to line.
this will add my desired string to the 4th column in the right place but I don't know how to limit this to a specific range of lines.
May be there is a way to do it in sed or may be awk?
Hello, I need help in appending the line number of each line to the file and also to get the total number of lines. Can somebody please help me.
I have a file say:
abc
def
ccc
ddd
ffff
The output should be:
Instance1=abc
Instance2=def
Instance3=ccc
Instance4=ddd
Instance5=ffff
... (2 Replies)
Hi Everybody,
I am trying to write a script that will get some perticuler data from a file and redirect to a file.
My Question is,
I have a Very huge file,In that file I have my required data is started from 25th line and it will ends in 100th line.
I know the line numbers, I need to get all... (9 Replies)
I having file below o/p
ibapp311dg,,20480,s,,,,,,,,,
test,,20480,s,,,,,,,,,
test,,20480,s,,,,,,,,,
ibapp311dg,,20480,s,,,,,,,,,
I want to to chk unique word line in the first field seperated by , as well as addup corressponding the number in field for each unique word like
ibapp311dg... (8 Replies)
using sed to replace a specific string on a specific line number using variables
this is where i am at
grep -v WARNING output | grep -v spawn | grep -v Passphrase | grep -v Authentication | grep -v '/sbin/tfadmin netguard -C'| grep -v 'NETWORK>' >> output.clean
grep -n Destination... (2 Replies)
Hi guys ,
I m writing a script to delete a line at particular location.
But i m unable to use variable for specifying line number.
for example.
sed -n '7!p' filename
works fine and deletes 7th line from my file
but
sed -n '$variable!p' filename
gives following error.
sed: -e... (12 Replies)
Hello Everyone.
I am trying to display contains of a file from a specific line to a specific line(let say, from line number 3 to line number 5). For this I got the shell script as shown below:
if ; then
if ; then
tail +$1 $3 | head -n $2
else
... (5 Replies)
Hello everyone,
I don't really know anything about scripting, but I have to manage to make this script, out of necessity.
#!/bin/bash
while read -r line; do #I'm reading from a big wordlist
instructions using $line
done
Is there a way to automatically write the $line number the script... (4 Replies)
Given a file like this:
abc
def
ghi
I need to get to
somestandardtext abc1 morestandardtext
somestandardtext def2 morestandardtext
somestandardtext ghi3 morestandardtext
Notice that in addition to the standard text there is the line number added in as well. What I conceived is... (4 Replies)
my requirement is,
consider a file output
cat output
blah sdjfhjkd jsdfhjksdh
sdfs 23423 sdfsdf sdf"sdfsdf"sdfsdf"""""dsf
hellow there
this doesnt look good
et cetc etc
etcetera
i want to replace a line of line number 4 ("this doesnt look good") with some other line
... (3 Replies)
Discussion started by: vivek d r
3 Replies
LEARN ABOUT MOJAVE
mail::dkim::textwrap
Mail::DKIM::TextWrap(3) User Contributed Perl Documentation Mail::DKIM::TextWrap(3)NAME
Mail::DKIM::TextWrap - text wrapping module written for use with DKIM
SYNOPSIS (FOR MAIL::DKIM USERS)
use Mail::DKIM::TextWrap;
Just add the above line to any program that uses Mail::DKIM::Signer and your signatures will automatically be wrapped to 72 characters.
SYNOPSIS (FOR OTHER USERS)
my $output = "";
my $tw = Mail::DKIM::TextWrap->new(
Margin => 10,
Output => $output,
);
$tw->add("Mary had a little lamb, whose fleece was white as snow.
");
$tw->finish;
print $output;
DESCRIPTION
This is a general-purpose text-wrapping module that I wrote because I had some specific needs with Mail::DKIM that none of the contemporary
text-wrapping modules offered.
Specifically, it offers the ability to change wrapping options in the middle of a paragraph. For instance, with a DKIM signature:
DKIM-Signature: a=rsa; c=simple; h=first:second:third:fourth;
b=Xr2mo2wmb1LZBwmEJElIPezal7wQQkRQ8WZtxpofkNmXTjXf8y2f0
the line-breaks can be inserted next to any of the colons of the h= tag, or any character of the b= tag. The way I implemented this was to
serialize the signature one element at a time, changing the text-wrapping options at the start and end of each tag.
TEXT WRAPPING OPTIONS
Text wrapping options can be specified when calling new(), or by simply changing the property as needed. For example, to change the number
of characters allowed per line:
$tw->{Margin} = 20;
Break
a regular expression matching characters where a line break can be inserted. Line breaks are inserted AFTER a matching substring. The
default is "/s/".
BreakBefore
a regular expression matching characters where a line break can be inserted. Line breaks are inserted BEFORE a matching substring.
Usually, you want to use Break, rather than BreakBefore. The default is "undef".
Margin
specifies how many characters to allow per line. The default is 72. If no place to line-break is found on a line, the line will extend
beyond this margin.
Separator
the text to insert when a linebreak is needed. The default is "
". If you want to set a following-line indent (e.g. all lines but the
first begin with four spaces), use something like "
".
Swallow
a regular expression matching characters that can be omitted when a line break occurs. For example, if you insert a line break between
two words, then you are replacing a "space" with the line break, so you are omitting the space. On the other hand, if you insert a line
break between two parts of a hyphenated word, then you are breaking at the hyphen, but you still want to display the hyphen. The
default is "/s/".
CONSTRUCTOR
new() - create a new text-wrapping object
my $tw = Mail::DKIM::TextWrap->new(
Output => $output,
%wrapping_options,
);
The text-wrapping object encapsulates the current options and the current state of the text stream. In addition to specifying text wrapping
options as described in the section above, the following options are recognized:
Output
a scalar reference, or a glob reference, to specify where the "wrapped" text gets output to. If not specified, the default of STDOUT is
used.
METHODS
add() - process some text that can be wrapped
$tw->add("Mary had a little lamb.
");
You can add() all the text at once, or add() the text in parts by calling add() multiple times.
finish() - call when no more text is to be added
$tw->finish;
Call this when finished adding text, so that any remaining text in TextWrap's buffers will be output.
flush() - output the current partial word, if any
$tw->flush;
Call this whenever changing TextWrap's parameters in the middle of a string of words. It explicitly allows a line-break at the current
position in the string, regardless of whether it matches the current break pattern.
perl v5.18.2 2012-11-28 Mail::DKIM::TextWrap(3)