If you could explain little by little much better for the benefit of all the beginners.
sed -n '/\(.\{99,154\}[^0-9]\.\).*/ {s//\1/p;q}' test.txt
Sure.
If it matches the pattern within the slashes execute the actions within the block {}. The block actions are, replace empty for the first matched group and print and quit.
The Perl line does it, almost the same way but in a less cryptic way. $& is the pattern matched.
Let's add a beginning of line anchor `^' to prevent the possibility of matching from the middle of the line.
Quote:
Originally Posted by Aia
Code:
sed -n '/^\(.\{99,154\}[^0-9]\.\).*/ {s//\1/p;q}' test.txt
With Perl:
Code:
perl -nle '/^.{99,154}\D\./ and print $& and last' test.txt
Hi,
I want to be able to list all the names in a file which begin with a capital letter, but I don't want it to list words that begin a new sentence. Is there any way round this?
Thanks for your help. (1 Reply)
file1 contains:
this is a test
this is a test and only a test
this is another test
this is another test and only another only
i'd like my file to look like this:
this is a test.
this is a test and only a test.
this is another test.
this is another test and only another only. (6 Replies)
Hello friends,
I am looking for any sed/awk/python script that can identify the position of a character or word in a file. Well, I prefer sed. <space> is a tab space since I actually dont know how to make the forum editor display a space as such.
Sample text
-----------
... (3 Replies)
Hello All ,
i am a newbie in korn shell scripting trying to trim a sentence that is parsed into a variable . The format of the sentence has three words that are separated from other by a
" : " colon and "." period . Format of the sentence looks like
... (5 Replies)
Dear help!
I want to print
The number i is number i
let i=1 to 5
output
should be like
The number 1 is number 1
The number 2 is number 2
The number 3 is number 3
The number 4 is number 4
The number 5 is number 5
Would be gr8 if you mke this with awk
Thanks (7 Replies)
Hello All,
I have file names in a directory that ends this way
File Names in the directory
abc.log.1.txt
abc.log.2.txt
abc.log.3.txt
I want to print the 1, 2 and 3 in the file names as the first column in my output, and some contents of the files as second and fourth columns. I wrote... (3 Replies)
Hi all,
I have ot match sentence list and word list anf fetch similar words in a separate file
second file with 2 columns
So I want the output shuld be 2 columns like this (3 Replies)
I started venturing in learning the art of using AWK/GAWK and wanted to simply added a period from line #11 to line #28 or to the end of the file if there is data. So for example:
11 Centos.NM
12 dojo1
13 redhat.5.5.32Bit
14 redhat.6.2.64Bit... (5 Replies)
My file has the entries like below...
/dev/sds
/dev/sdak
/dev/sdbc
/dev/sdbu
I want to make the file like below
echo 1 > /sys/block/sds/device/rescan
echo 1 > /sys/block/sdak/device/rescan
echo 1 > /sys/block/sdbc/device/rescan
echo 1 > /sys/block/sdbu/device/rescan (2 Replies)
Discussion started by: saravanapandi
2 Replies
LEARN ABOUT DEBIAN
test::regression
Test::Regression(3pm) User Contributed Perl Documentation Test::Regression(3pm)NAME
Test::Regression - Test library that can be run in two modes; one to generate outputs and a second to compare against them
VERSION
Version 0.05
SYNOPSIS
use Test::Regression;
ok_regression(sub {return "hello world"}, "t/out/hello_world.txt");
DESCRIPTION
Using the various Test:: modules you can compare the output of a function against what you expect. However if the output is complex and
changes from version to version, maintenance of the expected output could be costly. This module allows one to use the test code to
generate the expected output, so that if the differences with model output are expected, one can easily refresh the model output.
EXPORT
ok_regression
FUNCTIONS
ok_regression
This function requires two arguments: a CODE ref and a file path. The CODE ref is expected to return a SCALAR string which can be compared
against previous runs. If the TEST_REGRESSION_GEN is set to a true value, then the CODE ref is run and the output written to the file.
Otherwise the output of the file is compared against the contents of the file. There is a third optional argument which is the test name.
ENVIRONMENT VARIABLES
TEST_REGRESSION_GEN
If the TEST_REGRESSION_GEN environment file is unset or false in a perl sense, then the named output files must exist and be readable and
the test will run normally comparing the outputs of the CODE refs against the contents of those files. If the environment variable is true
in a perl sense, then model output files will be overwritten with the output of the CODE ref.
AUTHOR
Nicholas Bamber, "<nicholas at periapt.co.uk>"
BUGS
Please report any bugs or feature requests to "bug-test-regression at rt.cpan.org", or through the web interface at
<http://rt.cpan.org/NoAuth/ReportBug.html?Queue=Test-Regression>. I will be notified, and then you'll automatically be notified of
progress on your bug as I make changes.
testing of STDERR
The testing of stderr from this module is not as thorough as I would like. Test::Builder::Tester allows turning off of stderr checking but
not matching by regular expression. Handcrafted efforts currently fall foul of Test::Harness. Still it is I believe adequately tested in
terms of coverage.
SUPPORT
You can find documentation for this module with the perldoc command.
perldoc Test::Regression
You can also look for information at:
o RT: CPAN's request tracker
<http://rt.cpan.org/NoAuth/Bugs.html?Dist=Test-Regression>
o AnnoCPAN: Annotated CPAN documentation
<http://annocpan.org/dist/Test-Regression>
o CPAN Ratings
<http://cpanratings.perl.org/d/Test-Regression>
o Search CPAN
<http://search.cpan.org/dist/Test-Regression/>
ACKNOWLEDGEMENTS
Some documentation improvements have been suggested by toolic (http://perlmonks.org/?node_id=622051).
Thanks to Filip GraliXski for pointing out I need to test against output of zero length and providing a patch.
COPYRIGHT & LICENSE
Copyright 2009-10 Nicholas Bamber.
This program is free software; you can redistribute it and/or modify it under the terms of either: the GNU General Public License as
published by the Free Software Foundation; or the Artistic License.
See http://dev.perl.org/licenses/ for more information.
perl v5.10.1 2010-08-29 Test::Regression(3pm)