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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 302894270 by bakunin on Monday 24th of March 2014 03:25:43 PM
Old 03-24-2014
Quote:
Originally Posted by fozilla
Hmm, so [: punct:] would be a good place to start with?
In principle: yes, but as you want to implement the "-r" option you need to break down this class to its member characters anyway.

You might want to start with the following thought: how does a script receive input? There are two ways: via <stdin> and via a file it reads from. If you use:

Code:
yourscript -f /path/to/file

The script is supposed to open that file and get its input by reading from it. If - in opposition to that - you use

Code:
cat /path/to/file | yourscript

or

Code:
yourscript < /path/to/file

The script gets its input by reading from <stdin>. You should start by researching and understanding how a script gathers input in these two ways prior to changing this input.

I hope this helps.

bakunin
 

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LEARN ABOUT LINUX

dbilogstrip

DBILOGSTRIP(1p) 					User Contributed Perl Documentation					   DBILOGSTRIP(1p)

NAME

       dbilogstrip - filter to normalize DBI trace logs for diff'ing

SYNOPSIS

       Read DBI trace file "dbitrace.log" and write out a stripped version to "dbitrace_stripped.log"

	 dbilogstrip dbitrace.log > dbitrace_stripped.log

       Run "yourscript.pl" twice, each with different sets of arguments, with DBI_TRACE enabled. Filter the output and trace through "dbilogstrip"
       into a separate file for each run. Then compare using diff. (This example assumes you're using a standard shell.)

	 DBI_TRACE=2 perl yourscript.pl ...args1... 2>&1 | dbilogstrip > dbitrace1.log
	 DBI_TRACE=2 perl yourscript.pl ...args2... 2>&1 | dbilogstrip > dbitrace2.log
	 diff -u dbitrace1.log dbitrace2.log

DESCRIPTION

       Replaces any hex addresses, e.g, 0x128f72ce with "0xN".

       Replaces any references to process id or thread id, like "pid#6254" with "pidN".

       So a DBI trace line like this:

	 -> STORE for DBD::DBM::st (DBI::st=HASH(0x19162a0)~0x191f9c8 'f_params' ARRAY(0x1922018)) thr#1800400

       will look like this:

	 -> STORE for DBD::DBM::st (DBI::st=HASH(0xN)~0xN 'f_params' ARRAY(0xN)) thrN

perl v5.12.3							    2011-05-06							   DBILOGSTRIP(1p)
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