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Full Discussion: UNIX Recycle Bin - restore function
Homework and Emergencies Homework & Coursework Questions UNIX Recycle Bin - restore function Post 302471297 by burn88 on Friday 12th of November 2010 01:13:15 PM
Old 11-12-2010
UNIX Recycle Bin - restore function
Use and complete the template provided. The entire template must be completed. If you don't, your post may be deleted!

1. The problem statement, all variables and given/known data:

A set of Linux shell scripts is required to allow users to ‘remove' files without them really disappearing until the ‘dustbin' is emptied. The three shell scripts required are :-

del <filename> - This script should move the file called <filename> (a full or relative pathname) to the
dustbin directory.

trash [-a] - This script should remove the contents of the dustbin directory.
If the -a option is not used, the script should print the filenames in the dustbin one by one and ask the
user for confirmation that they should be deleted.
Otherwise, If the -a option is used, the script should simply remove ALL files from the dustbin.

restore [-n] <filename> - This script should move the file called <filename> (a full or relative pathname)
back to its original directory.
If the -n option is used, the script should allow the file to be moved to a directory nominated by the user.


Help:

I need help with the restore function.
How can I save the original path of the file and then after deletion move it back? (bash code would help)
Any relevant ideas on how to do this can help me very much.
Thanks!


2. Relevant commands, code, scripts, algorithms:

bash code
using Puppy Linux OS
I used a dustbin directory to keep my deleted files


3. The attempts at a solution (include all code and scripts):

To get the path of the file I used this:
ABS_PATH=$(cd $(dirname ${1});pwd)

4. Complete Name of School (University), City (State), Country, Name of Professor, and Course Number (Link to Course):
Edinburgh Napier University , Edinburgh , UK , Dr Alistair Armitage , CSN08101 Systems and Services

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 CENTOS

bf_tar

BF_TAR(1)						    Bogofilter Reference Manual 						 BF_TAR(1)

NAME

       bf_tar - shell script to write a tar file of a bogofilter directory to stdout

SYNOPSIS

       bf_tar [-r] [-R] bogofilter_directory

DESCRIPTION

       bf_tar bundles a bogofilter working directory in tar format and copies it to standard output (your console, or where you redirect it, see
       EXAMPLES below).

OPTIONS

       The -r option causes bf_tar to remove inactive log files after the archive has been written successfully. The default is to leave log
       files.

       The -R option causes bf_tar to remove inactive log files before the archive is written. This may reduce chances that the resulting archive
       is recoverable should it become damaged. The archive may be smaller though. The default is to leave log files.

EXIT STATUS

       The script exits with status code 0 if everything went well, and nonzero if it encountered trouble.

EXAMPLES

       o   bf_tar ~/.bogofilter > outfile.tar

	   Writes a standard .tar file containing the essential files from ~/.bogofilter to outfile.tar.

       o   bf_tar ~/.bogofilter | gzip -9 -c > outfile.tar.gz

	   Writes a gzipped .tar.gz file containing the essential files from ~/.bogofilter to outfile.tar.gz.

       o   bf_tar `pwd`/mydirectory > outfile.tar

	   Prepend $(pwd)/ or `pwd`/ if you want to specify an absolute path instead of a relative path.

NOTES

       This script is meant for use with Berkeley DB based bogofilter versions.

       This script requires a SUSv2 compliant pax utility.

       This script expects a SUSv2 compliant shell. Solaris systems should have the SUNWxcu4 package installed (when bogofilter is configured) so
       that /usr/xpg4/bin/sh can be used.

AUTHORS

       Matthias Andree

Bogofilter							    10/22/2012								 BF_TAR(1)
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