For pravin27's code, if the input txt file has two b1b, but no d1d, it will also export the filename. If there are more b1b, d1d, (more than 2), if will not list it.
Hi guys, I hope you can help me with my problem.
I have a text file that contains lines like this:
78 ANGELO -809.05
79 ANGELO2 -5,000.06
I need to find all occurences of amounts that are negative and replace them with x's
78 ANGELO xxxxxxx
79... (4 Replies)
for a certain directory, I want to grep a particular file called ABCD so what I do is
ls /my/dir | grep -i "ABCD" | awk '{print $9}'
however, there is also this file called ABCDEFG, the above command would reurn both file when I only want ABCD, please help! (3 Replies)
Hello,
i have a program where i have to get a character from the user and check it against the word i have and then replace the character in a blank at the same position it is in the word. (7 Replies)
Hi all,
I appreciate the enormous amount of knowledge that flows in this forum.
I am an average UNIX user. I have many files with lines like the below. I have separated each line with space for ease of reading. I need to replace the first occurance of "/00" with null on those lines that have... (6 Replies)
I've been battling with parsing a comma-delimited string, and have had what I would call B- success. I'm using perl and trying to parse out specific identifiers from a string, into a new string. When things are "normal," my regex works fine. When things get complicated, my script fails... (1 Reply)
I have a string like ab or abc of whatever length. But i want to know whether another string ( for example, abcfghijkl, OR a<space> bcfghijkl ab<space> cfghijkl OR a<space>bcfghijkl OR ab<space> c<space> fghijkl ) starts with ab or abc... space might existing on the longer string... If so, i... (4 Replies)
Hi,
i want to know how to compare string of file with input string
im trying following code:
file_no=`paste -s -d "||||\n" a.txt | cut -c 1`
#it will return collection number from file
echo "enter number"
read " curr_no"
if ; then
echo " current number already present"
fi
... (4 Replies)
I am facing a problem and I would be grateful if you can help me :wall:
I have a list of words like
And I have a datafile like
the box of
the box of tissues out of
of tissues out of
the book, the
the book, the pen and the
the pen and the
I want to find Patterns of “x.*x” where... (2 Replies)
Hi, I need to search/grep userid and its value based on a condition that the user id is under the heading "*central_test*" in a big file of about 70808MB. The * represents some strings before and after the string "centrla_test". Could anyone please guide. OS is hp-ux. (2 Replies)
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)