02-18-2012
does not return anything..
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Hi All,
I have files:
1. abc.sql
'This is a sample file for testing'
This does not have quotations
this also does not have quotations.
and this 'has quotations'.
here I need to list the hard coded strings 'This is a sample file for testing' and
'has quotations'.
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2. Shell Programming and Scripting
Hi, how do I match a particular element in a list and replace it with blank?
awk 'sub///' $FILE
list="AL, AK, AZ, AR, CA, CO, CT, DE, FL, GA,
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3. Shell Programming and Scripting
If i wanted to search for two strings that are on lines in the log, how do I do it?
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4. Shell Programming and Scripting
Hi, i would really appreciate any help anyone can give with the following info.
Thanks in advance.
I need to run a search on a file that contains thousands of trades, each trade is added into the file in blocks of 25 lines. i know the search has to take place between a time stamp specified... (4 Replies)
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5. Shell Programming and Scripting
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// Search_strings.txt
tag
string
dummy
stuff
things
// List of files to search in
textfile1.txt
textfile2.txt
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6. Shell Programming and Scripting
Hi,
I have a text file with the following content:
monday,20
tuesday,10
wednesday,29
monday,10
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thursday,34
i want the following output:
monday,45
tuesday,10
wednesday,43
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7. Shell Programming and Scripting
Objective:
Recursively search all files under a directory for SQL statements that end with ";"
Sample input:
UPDATE table1
set col=val
UPDATE table2
set cola=vala
,colb=valb;
UPDATE table3
set col=val
Expected output:
UPDATE table2
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8. Shell Programming and Scripting
Hello Guyz
I have been following this forum for a while and the solutions provided are super useful. I currently have a scenario where i need to search for a pattern and start searching by keeping the first pattern as a baseline
ABC
DEF
LMN
EFG
HIJ
LMN
OPQ
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9. Shell Programming and Scripting
I have a file with many lines which contain strings like .. etc.
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10. UNIX for Beginners Questions & Answers
I have this fileA
TEST FILE ABC
this file contains ABC;
TEST FILE DGHT this file contains DGHT;
TEST FILE 123
this file contains ABC,
this file contains DEF,
this file contains XYZ,
this file contains KLM
;
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LEARN ABOUT MOJAVE
devel::dwarn5.18
Devel::Dwarn(3) User Contributed Perl Documentation Devel::Dwarn(3)
NAME
Devel::Dwarn - return Dwarn @return_value
SYNOPSIS
use Devel::Dwarn;
return Dwarn some_call(...)
is equivalent to:
use Data::Dumper::Concise;
if (wantarray) {
my @return = some_call(...);
warn Dumper(@return);
return @return;
} else {
my $return = some_call(...);
warn Dumper($return);
return $return;
}
but shorter. If you need to force scalar context on the value,
use Devel::Dwarn;
return DwarnS some_call(...)
is equivalent to:
use Data::Dumper::Concise;
my $return = some_call(...);
warn Dumper($return);
return $return;
If you need to force list context on the value,
use Devel::Dwarn;
return DwarnL some_call(...)
is equivalent to:
use Data::Dumper::Concise;
my @return = some_call(...);
warn Dumper(@return);
return @return;
If you want to label your output, try DwarnN
use Devel::Dwarn;
return DwarnN $foo
is equivalent to:
use Data::Dumper::Concise;
my @return = some_call(...);
warn '$foo => ' . Dumper(@return);
return @return;
If you want to output a reference returned by a method easily, try $Dwarn
$foo->bar->{baz}->$Dwarn
is equivalent to:
my $return = $foo->bar->{baz};
warn Dumper($return);
return $return;
If you want to immediately die after outputting the data structure, every Dwarn subroutine has a paired Ddie version, so just replace the
warn with die. For example:
DdieL 'foo', { bar => 'baz' };
TIPS AND TRICKS
global usage
Instead of always just doing:
use Devel::Dwarn;
Dwarn ...
We tend to do:
perl -MDevel::Dwarn foo.pl
(and then in the perl code:)
::Dwarn ...
That way, if you leave them in and run without the "use Devel::Dwarn" the program will fail to compile and you are less likely to check it
in by accident. Furthmore it allows that much less friction to add debug messages.
method chaining
One trick which is useful when doing method chaining is the following:
my $foo = Bar->new;
$foo->bar->baz->Devel::Dwarn::DwarnS->biff;
which is the same as:
my $foo = Bar->new;
(DwarnS $foo->bar->baz)->biff;
SEE ALSO
This module is really just a shortcut for Data::Dumper::Concise::Sugar, check it out for more complete documentation.
perl v5.18.2 2013-12-31 Devel::Dwarn(3)