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Full Discussion: Removing punctuations from file input or standard input
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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LEARN ABOUT OPENSOLARIS

shcomp

shcomp(1)							   User Commands							 shcomp(1)

NAME

       shcomp - compile a ksh93 shell script

SYNOPSIS

       shcomp [-nv] [infile [outfile]]

       shcomp -D [infile [outfile]]

DESCRIPTION

       If  the	-D  option  is not specified, shcomp takes a shell script, infile, and creates a binary format file, outfile, that ksh93 reads and
       executes with the same effect as the original script.

       Aliases are processed as the script is read. Alias definitions whose value requires variable expansion will not work correctly.

OPTIONS

       The following options are supported:

       -D	       Generate a list of strings that need to be placed in a message catalog for internationalization.
       --dictionary
		       With this option, all double quoted strings that are preceded by $ are printed, one literal  per  line.	A  literal  $"foo"
		       prints  "foo" in the output. These are the messages that need to be translated to locale specific versions for internation-
		       alization.

       -n	       Display warning messages for obsolete or non-conforming constructs.
       --noexec

       -v	       Display input from infile onto standard error as it reads it.
       --verbose

OPERANDS

       The following operands are supported:

       infile	  Specifies the name of the file that contains the shell script to be used as input.

		  If infile is omitted, the shell script is read from standard input.

       outfile	  Specifies the name of the output file.

		  If outfile is omitted, both modes write their results to standard output.

EXIT STATUS

       The following exit values are returned:

       0     Successful completion.

       >0    An error occurred.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWcsu			   |
       +-----------------------------+-----------------------------+
       |CSI			     |Enabled			   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |See below.		   |
       +-----------------------------+-----------------------------+

       The command-line interface and the system variables are Committed. The compiled shell code format is Private. The output of the	-D  option
       is Volatile.

SEE ALSO

       ksh93(1), attributes(5)

SunOS 5.11							    27 Jan 2009 							 shcomp(1)
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