In awk, I'd like to check if a field is blank.
And by blank I mean, the field could be "" or " "
In other words, the field could either be empty, or be filled with spaces.
Would the regex look like this?
$5 ~ // { Action }?
What other ways are there?
Hmm.. in any case I think... (7 Replies)
I have a pipe delimited file. I need to check that the first and second fields are 5 characters long and if not i need to append 0 in front of them to make them 5 characters long. can some body let mwe know how i can find the length of the two fields and then make them 5 characters long if they... (6 Replies)
Hi All ,
I am trying to build a script using awk that checks columns of the înput file and displays message if the column length exceeds 35 char.
i have tried the below code but it does not work properly (2 Replies)
Hello Everyone,
I am stuck with one issue while working on abstract flat file which i have to use as input and load data to table.
Input Data-
------ ------------------------ ---- -----------------
WFI001 Xxxxxx Control Work Item A Number of Records
------ ------------------------... (5 Replies)
Hi,
I have a issue, I need to loop through a comma delimited file and check for the length which exceeds specified length , if Yes truncate the string.
But my problem is , I do not have to check for all the fields and the field lenght is not same for all the fields.
For ex:
Say my line... (9 Replies)
Hi all,
I have a requirement to replace a field with a character as per the length of the field.
Suppose i have a file where second field is of 20 character length. I want to replace second field with 20 stars (*). like ********************
As the field is not a fixed one, i want to do the... (2 Replies)
I have several questions about using awk. I'm hoping someone could lend me a hand. (I'm also hoping that my questions make sense.)
I have a file that contains pipe separated data. Each line has similar data but the number of fields and the field position on each line is variable. ... (3 Replies)
The awk below using the sample input would output the following: Basically, it averages the text in $5 that matches if $7 < 30 .
awk '{if(len==0){last=$5;total=$7;len=1;getline}if($5!=last){printf("%s\t%f\n", last,... (6 Replies)
The awk below produces the current output, which will add +1 to $3. However, I am trying to add the length of the matching characters between $5 and $6 to $3. I have tried using sub as a variable to store the length but am not able to do so correctly. I added comments to each line and the... (4 Replies)
Perl::Critic::Policy::ControlStructures::ProhibitUnreachUserCContributed PerlPerl::Critic::Policy::ControlStructures::ProhibitUnreachableCode(3pm)NAME
Perl::Critic::Policy::ControlStructures::ProhibitUnreachableCode - Don't write code after an unconditional "die, exit, or next".
AFFILIATION
This Policy is part of the core Perl::Critic distribution.
DESCRIPTION
This policy prohibits code following a statement which unconditionally alters the program flow. This includes calls to "exit", "die",
"return", "next", "last" and "goto". Due to common usage, "croak" and "confess" from Carp are also included.
Code is reachable if any of the following conditions are true:
o Flow-altering statement has a conditional attached to it
o Statement is on the right side of an operator "&&", "||", "//", "and", "or", or "err".
o Code is prefixed with a label (can potentially be reached via "goto")
o Code is a subroutine
EXAMPLES
# not ok
exit;
print "123
";
# ok
exit if !$xyz;
print "123
";
# not ok
for ( 1 .. 10 ) {
next;
print 1;
}
# ok
for ( 1 .. 10 ) {
next if $_ == 5;
print 1;
}
# not ok
sub foo {
my $bar = shift;
return;
print 1;
}
# ok
sub foo {
my $bar = shift;
return if $bar->baz();
print 1;
}
# not ok
die;
print "123
";
# ok
die;
LABEL: print "123
";
# not ok
croak;
do_something();
# ok
croak;
sub do_something {}
CONFIGURATION
This Policy is not configurable except for the standard options.
SEE ALSO
Perl::Critic::Policy::ControlStructures::ProhibitPostfixControls
AUTHOR
Peter Guzis <pguzis@cpan.org>
COPYRIGHT
Copyright (c) 2006-2011 Peter Guzis. All rights reserved.
This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself. The full text of this license
can be found in the LICENSE file included with this module.
perl v5.14.22012-06-0Perl::Critic::Policy::ControlStructures::ProhibitUnreachableCode(3pm)