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Homework and Emergencies Homework & Coursework Questions Removing punctuations from file input or standard input Post 302894172 by fozilla on Monday 24th of March 2014 08:38:07 AM
Old 03-24-2014
Linux Removing punctuations from file input or standard input

Just started learning Unix and received my first assignment recently. We haven't learned many commands and honestly, I'm stumped. I'd like to receive assistance/guidance/hints.

1. The problem statement, all variables and given/known data:
How do I write a shell script that takes in a file or stdin that removes all the punctuation from it?

The shell script should be called from two ways:
  • removePunc FILENAME, where it reads a file in called FILENAME
  • removePunc, where it reads in standard input

For example, if the input is:

"Hello", she said. "Nice to meet you!", he {thought aloud}.

Then the output should be:

Hello she said Nice to meet you he thought aloud

The script must also accept one option, -r chars, where chars specifies characters to be removed from input. These characters are to be removed instead of the standard punctuation characters mentioned earlier.

2. Relevant commands, code, scripts, algorithms:



3. The attempts at a solution (include all code and scripts):

I really don't know where to begin, but I have a few concepts in mind. Can it be done by using sed or tr with a
Code:
while read line loop

4. Complete Name of School (University), City (State), Country, Name of Professor, and Course Number (Link to Course):

Adelaide University, Adelaide SA, Australia, David Knight, CS2005


Regards.

Note: Without school/professor/course information, you will be banned if you post here! You must complete the entire template (not just parts of it).
 

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Module::Load(3) 					User Contributed Perl Documentation					   Module::Load(3)

NAME
Module::Load - runtime require of both modules and files SYNOPSIS
use Module::Load; my $module = 'Data:Dumper'; load Data::Dumper; # loads that module load 'Data::Dumper'; # ditto load $module # tritto my $script = 'some/script.pl' load $script; load 'some/script.pl'; # use quotes because of punctuations load thing; # try 'thing' first, then 'thing.pm' load CGI, ':standard' # like 'use CGI qw[:standard]' DESCRIPTION
"load" eliminates the need to know whether you are trying to require either a file or a module. If you consult "perldoc -f require" you will see that "require" will behave differently when given a bareword or a string. In the case of a string, "require" assumes you are wanting to load a file. But in the case of a bareword, it assumes you mean a module. This gives nasty overhead when you are trying to dynamically require modules at runtime, since you will need to change the module notation ("Acme::Comment") to a file notation fitting the particular platform you are on. "load" eliminates the need for this overhead and will just DWYM. Rules "load" has the following rules to decide what it thinks you want: o If the argument has any characters in it other than those matching "w", ":" or "'", it must be a file o If the argument matches only "[w:']", it must be a module o If the argument matches only "w", it could either be a module or a file. We will try to find "file.pm" first in @INC and if that fails, we will try to find "file" in @INC. If both fail, we die with the respective error messages. Caveats Because of a bug in perl (#19213), at least in version 5.6.1, we have to hardcode the path separator for a require on Win32 to be "/", like on Unix rather than the Win32 "". Otherwise perl will not read its own %INC accurately double load files if they are required again, or in the worst case, core dump. "Module::Load" cannot do implicit imports, only explicit imports. (in other words, you always have to specify explicitly what you wish to import from a module, even if the functions are in that modules' @EXPORT) ACKNOWLEDGEMENTS
Thanks to Jonas B. Nielsen for making explicit imports work. BUG REPORTS
Please report bugs or other issues to <bug-module-load@rt.cpan.org<gt>. AUTHOR
This module by Jos Boumans <kane@cpan.org>. COPYRIGHT
This library is free software; you may redistribute and/or modify it under the same terms as Perl itself. perl v5.16.3 2013-02-01 Module::Load(3)
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