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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 MOJAVE

cpanplus::shell

CPANPLUS::Shell(3pm)					 Perl Programmers Reference Guide				      CPANPLUS::Shell(3pm)

NAME

       CPANPLUS::Shell - base class for CPANPLUS shells

SYNOPSIS

	   use CPANPLUS::Shell; 	    # load the shell indicated by your
					    # config -- defaults to
					    # CPANPLUS::Shell::Default

	   use CPANPLUS::Shell qw[Classic]  # load CPANPLUS::Shell::Classic;

	   my $ui      = CPANPLUS::Shell->new();
	   my $name    = $ui->which;	    # Find out what shell you loaded

	   $ui->shell;			    # run the ui shell

DESCRIPTION

       This module is the generic loading (and base class) for all "CPANPLUS" shells. Through this module you can load any installed "CPANPLUS"
       shell.

       Just about all the functionality is provided by the shell that you have loaded, and not by this class (which merely functions as a generic
       loading class), so please consult the documentation of your shell of choice.

BUG REPORTS

       Please report bugs or other issues to <bug-cpanplus@rt.cpan.org<gt>.

AUTHOR

       This module by Jos Boumans <kane@cpan.org>.

COPYRIGHT

       The CPAN++ interface (of which this module is a part of) is copyright (c) 2001 - 2007, Jos Boumans <kane@cpan.org>. All rights reserved.

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

SEE ALSO

       CPANPLUS::Shell::Default, CPANPLUS::Shell::Classic, cpanp

perl v5.18.2							    2014-01-06						      CPANPLUS::Shell(3pm)
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