How do I generate a script with an inverse action? Post: 302986811

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Top Forums UNIX for Beginners Questions & Answers How do I generate a script with an inverse action? Post 302986811 by Braveheart on Wednesday 30th of November 2016 09:49:20 AM

11-30-2016

Registered User

How do I generate a script with an inverse action?

I have an interactive script which sorts and processes a variety of filetypes from an unsorted folder into newly created directories.

The script works great, But I was wondering how I could generate a script with an inverse action so that I could unwind / undo the executed script and its sorting process back to the folders (pre sort) state if need be.

What is the leanest possible way of achieving this.

Code:

#!/bin/bash
read -p "Good Morning, Please enter your file type name for sorting [ENTER]:" all_extensions
if cd /Users/christopherdorman/desktop
  then  while read extension
      do    destination="folder$extension"
        mkdir -p "$destination"
        mv  -v unsorted/*."$extension" "$destination"
      done   <<< "${all_extensions// /$'\n'}"
        mkdir -p foldermisc 
        if mv  -v unsorted/* "foldermisc"
      then  echo "Good News, the rest of Your files have been successfully processed"
        fi
    for i in folder*/; do
        ls -S "$i" > "${i}filelist" 
        cat "${i}filelist" >> ~/desktop/summary.txt
    done
fi

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ipescript

IPESCRIPT(1)						      General Commands Manual						      IPESCRIPT(1)

NAME

       ipescript - Run an Ipe script (written in Lua)

SYNOPSIS

       ipescript script { arguments }

DESCRIPTION

       ipescript  runs	an Ipe script written in Lua.  The Ipe bindings are automatically available in the script.  Ipescript looks for the script
       in any of the script directories.

       The script argument should not contain the .lua extension.

ENVIRONMENT VARIABLES

       ipescript respects the following environment variables:

       IPELATEXDIR
	      the directory where ipetoipe runs Pdflatex.

       IPESCRIPTS a list of directories where Ipescript will look for
	      scripts.	When this variable is not set, Ipe searches first the current directory, then ~/.ipe/scripts, and finally the  system-wide
	      Ipe script directory.  When this variable is set, it should contain a list of directories, separated by semicolons.  A single under-
	      score is replaced by the system-wide Ipe script directory.

       IPEDEBUG
	      set this to 1 for debugging output from ipescript.

AUTHOR

       Otfried Cheong

REPORTING BUGS

       Please report bugs using Ipe bugzilla at http://ipe7.sourceforge.net/bugzilla.html

SEE ALSO

       Ipe is documented fully in The Ipe Manual, which is available online at http://ipe7.sourceforge.net/manual/manual.html .

								  August 28, 2011						      IPESCRIPT(1)