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Full Discussion: Shell Script Comment code blocks in a bash source file
Top Forums Shell Programming and Scripting Shell Script Comment code blocks in a bash source file Post 302986916 by HiFuture0801 on Thursday 1st of December 2016 02:32:52 PM
Old 12-01-2016
Bug Shell Script Comment code blocks in a bash source file
Just began to learn on Shell Script. I got an exercise from my friend. I know how to make this happen in C, but I'm not familiar with Shell Script. Hope I can get some help from all of you.
I want to write a bash script to comment code blocks in a bash source file. What I mean comment is '#', I know that there is a build in command : would help. But I still have no idea how should I start this.
Should I read the source file first, Then output it as another file?

Here is an example:

Original Source File:
Code:
Final=$(date -d "2016-12-15 14:00" "+%j")
while true ; do
  Today=$(date "+%j")
  Days=$((Final - Today))
  if (( Days >= 14 )) ; then
    echo party
  elif (( Days >= 2 )) ; then
    echo study
  elif (( Days == 1 )) ; then
    for Count in 1 2 3   # loop 2
      do
      echo panic
    done   # loop 2
  else
    break
  fi
  sleep 8h
done

After Script:
Code:
Final=$(date -d "2016-12-15 14:00" "+%j")
while true ; do   # loop 1
  Today=$(date "+%j")
  Days=$((Final - Today))
  if (( Days >= 14 )) ; then   # selection 1
    echo party
  elif (( Days >= 2 )) ; then
    echo study
  elif (( Days == 1 )) ; then
    for Count in 1 2 3   # loop 2
      do
      echo panic
    done   # loop 2
  else
    break
  fi   # selection 1
  sleep 8h
done   # loop 1

Here is some other requirement:
Read from standard input, write to standard output.
At the end of any line containing while until for add the comment: # loop n
At the end of any line containing done add the comment: # loop n
At the end of any line containing if case add the comment: # selection n
At the end of any line containing fi esac add the comment: # selection n
Last edited by HiFuture0801; 12-01-2016 at 03:49 PM.. Reason: Provide Example
 

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LEARN ABOUT CENTOS

locale::script

Locale::Script(3)					User Contributed Perl Documentation					 Locale::Script(3)

NAME

       Locale::Script - standard codes for script identification

SYNOPSIS

	  use Locale::Script;

	  $script  = code2script('phnx');		      # 'Phoenician'
	  $code    = script2code('Phoenician'); 	      # 'Phnx'
	  $code    = script2code('Phoenician',
				 LOCALE_CODE_NUMERIC);	      # 115

	  @codes   = all_script_codes();
	  @scripts = all_script_names();

DESCRIPTION

       The "Locale::Script" module provides access to standards codes used for identifying scripts, such as those defined in ISO 15924.

       Most of the routines take an optional additional argument which specifies the code set to use. If not specified, the default ISO 15924
       four-letter codes will be used.

SUPPORTED CODE SETS

       There are several different code sets you can use for identifying scripts. A code set may be specified using either a name, or a constant
       that is automatically exported by this module.

       For example, the two are equivalent:

	  $script = code2script('phnx','alpha');
	  $script = code2script('phnx',LOCALE_SCRIPT_ALPHA);

       The codesets currently supported are:

       alpha, LOCALE_SCRIPT_ALPHA
	   This is a set of four-letter (capitalized) codes from ISO 15924 such as 'Phnx' for Phoenician.  It also includes additions to this set
	   included in the IANA language registry.

	   The Zxxx, Zyyy, and Zzzz codes are not used.

	   This is the default code set.

       num, LOCALE_SCRIPT_NUMERIC
	   This is a set of three-digit numeric codes from ISO 15924 such as 115 for Phoenician.

ROUTINES

       code2script ( CODE [,CODESET] )
       script2code ( NAME [,CODESET] )
       script_code2code ( CODE ,CODESET ,CODESET2 )
       all_script_codes ( [CODESET] )
       all_script_names ( [CODESET] )
       Locale::Script::rename_script  ( CODE ,NEW_NAME [,CODESET] )
       Locale::Script::add_script  ( CODE ,NAME [,CODESET] )
       Locale::Script::delete_script  ( CODE [,CODESET] )
       Locale::Script::add_script_alias  ( NAME ,NEW_NAME )
       Locale::Script::delete_script_alias  ( NAME )
       Locale::Script::rename_script_code  ( CODE ,NEW_CODE [,CODESET] )
       Locale::Script::add_script_code_alias  ( CODE ,NEW_CODE [,CODESET] )
       Locale::Script::delete_script_code_alias  ( CODE [,CODESET] )
	   These routines are all documented in the Locale::Codes::API man page.

SEE ALSO

       Locale::Codes
	   The Locale-Codes distribution.

       Locale::Codes::API
	   The list of functions supported by this module.

       http://www.unicode.org/iso15924/
	   Home page for ISO 15924.

       http://www.iana.org/assignments/language-subtag-registry
	   The IANA language subtag registry.

AUTHOR

       See Locale::Codes for full author history.

       Currently maintained by Sullivan Beck (sbeck@cpan.org).

COPYRIGHT

	  Copyright (c) 1997-2001 Canon Research Centre Europe (CRE).
	  Copyright (c) 2001-2010 Neil Bowers
	  Copyright (c) 2010-2013 Sullivan Beck

       This module is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

perl v5.16.3							    2013-06-03							 Locale::Script(3)
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