For readability, here's a formatted and numbered version:
My guess is that in line 14 you're trying to assign a regular expression to a variable, and use that in the match below. To do that, you'd have to use the qr// construct, and it would be much more efficient to do that outside the loop, instead of each time again.
Other than that, you can probably do the same thing with a simple grep {}, eg
Hi Scripting Gurus, I am new bee in perl, and trying to write a script which must print the free disk space availability of C and E drives. Please advice.
Here is the script snippet and expected output:
#!/usr/bin/perl
use CGI qw/:html3 :standard/;
$spaceuselog =... (4 Replies)
I have a perl program that uses the mail program to send emails. It works fine but because I want to change the return address on the emails to be different I need to use mailx with the "-r" option. the problem is when I change this line to use mailx I no longer recieve "any" emails.
This works... (1 Reply)
Hey Guys,
I have some weird problem with printing scalars ...
When I'm executing script both are printing in terminal ...
But only one is printed to the file ?
I don't know whats going on .. :)
Btw .. I'm noobie :) took me lots of time to put this simple script together :)
Thank you... (3 Replies)
Long story short: I'm working inside of a Unix SSH under a bash shell. I have to code a C program that generates a random number. Then I have to call the compiled C program with a Perl program to run the C program 20 times and put all the generated random #s into a text file, then print that text... (1 Reply)
Hey guys i am using perl and trying to pull a list of books from a database and then populate the list in a separate TT2 file. When the list is generated there should be 39 book names. When I do the foreach statement in my tt2 below, the first statement gives me 39 Array(random number) and the... (1 Reply)
I got multiple of documents in which i have to extract a line coming after a ID..The scenario is
Customer ID: none
VT : 002/89
Customer ID: Yes
VT: 001/89
Customer ID: none
VT: 006/85
Customer ID: Yes
VT: 003/56
I have to extract the id which is coming after YES..The output... (7 Replies)
HI
I am trying to create a bash script to print whatever i type in
It has to have these below to define the size of the label and what size to print the text
N
q609
A100,10,0,5,2,2,N," "
P1
It has to be sent to below
> /dev/usblp0
So what it has to be is
Written... (12 Replies)
Hi
I have a file with number of entries
name 1 123
name 1 345
name 1 65346
name2 3243
name2 24234
name 2 234234
so on .........
how to count total number of entries for name 1 and name2...and so on Please guide. (1 Reply)
I created a program, so a kid can practice there math on it. It dispenses varies math problems and the kid must input an answer. I also want it to grade the work they have done, but I can't find the best place for it to print out the grade.
I have:
if ( $response =~ m/^/ ) {
$user_wants_to_quit... (1 Reply)
Perl::Critic::Policy::InputOutput::ProhibitTwoArgOpen(3)User Contributed Perl DocumentatioPerl::Critic::Policy::InputOutput::ProhibitTwoArgOpen(3)NAME
Perl::Critic::Policy::InputOutput::ProhibitTwoArgOpen - Write "open $fh, q{<}, $filename;" instead of "open $fh, "<$filename";".
AFFILIATION
This Policy is part of the core Perl::Critic distribution.
DESCRIPTION
The three-argument form of "open" (introduced in Perl 5.6) prevents subtle bugs that occur when the filename starts with funny characters
like '>' or '<'. The IO::File module provides a nice object-oriented interface to filehandles, which I think is more elegant anyway.
open( $fh, '>output.txt' ); # not ok
open( $fh, q{>}, 'output.txt' ); # ok
use IO::File;
my $fh = IO::File->new( 'output.txt', q{>} ); # even better!
It's also more explicitly clear to define the input mode of the file, as in the difference between these two:
open( $fh, 'foo.txt' ); # BAD: Reader must think what default mode is
open( $fh, '<', 'foo.txt' ); # GOOD: Reader can see open mode
This policy will not complain if the file explicitly states that it is compatible with a version of perl prior to 5.6 via an include
statement, e.g. by having "require 5.005" in it.
CONFIGURATION
This Policy is not configurable except for the standard options.
NOTES
There are two cases in which you are forced to use the two-argument form of open. When re-opening STDIN, STDOUT, or STDERR, and when doing
a safe pipe open, as described in perlipc.
SEE ALSO
IO::Handle
IO::File
AUTHOR
Jeffrey Ryan Thalhammer <jeff@imaginative-software.com>
COPYRIGHT
Copyright (c) 2005-2011 Imaginative Software Systems. All rights reserved.
This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.
perl v5.16.3 2014-06-09 Perl::Critic::Policy::InputOutput::ProhibitTwoArgOpen(3)