How to unrar multiple .rar files in OMV 5

hotsauce · Apr 19th 2020

I have a file that I'm trying to extract that was broken up into multiple .rar files (.rar, .r00, .r01, etc). I've tried dtrx, unrar-free and unp but all three failed. I also tried installing unrar, but it couldn't install. I ended up using 7zip over the network to get my file extracted.

I've copied down what the terminal outputs for each program I've tried on the same file, and also what happened when i tried to install unrar via terminal. I installed the other three programs through the apttool plug in.

dtrx

Code

Traceback (most recent call last):
  File "/usr/bin/dtrx", line 1346, in <module>
    sys.exit(app.run())
  File "/usr/bin/dtrx", line 1331, in run
    builder.get_extractor()))
  File "/usr/bin/dtrx", line 1277, in try_extractors
    for extractor in builder:
  File "/usr/bin/dtrx", line 996, in get_extractor
    getattr(self, 'try_by_' + func_name)(self.filename)
  File "/usr/bin/dtrx", line 1024, in try_by_magic
    stdout=subprocess.PIPE)
  File "/usr/lib/python2.7/subprocess.py", line 394, in __init__
    errread, errwrite)
  File "/usr/lib/python2.7/subprocess.py", line 1047, in _execute_child
    raise child_exception
OSError: [Errno 2] No such file or directory

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unrar-free

Code

Extracting  <filename>         Failed
1 Failed

unp - not sure why it failed because unrar-free was installed when I ran it

Code

unrar 0.0.1  Copyright (C) 2004  Ben Asselstine, Jeroen Dekkers


Extracting from <filepath.rar>

Extracting  <file>         Failed
1 Failed
Error, following packages must be installed in order to proceed:
rar or unrar or unrar-free

unrar

Code

sudo apt-get install unrar
[sudo] password for <me>:
Reading package lists... Done
Building dependency tree
Reading state information... Done
Package unrar is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source


E: Package 'unrar' has no installation candidate

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Any suggestions on how to fix my issue?

Bonus points if you can suggest a way to auto unrar files in a folder once a download finishes or if that is not possible, to run a command once on a directory and have it extract from all sub directories.

Adoby · Apr 19th 2020

Don't use unrar-free.

Instead use unrar-nonfree. Then you can unrar multipart rar files, as expected.

sudo apt install unrar-nonfree

As for automatically unrar files, when a download finish, it depends on what you download and with what. Most likely the software can trigger something when a download is done. If not, use another downloader. There are many, many solutions to your problem. It has been solved thousands of times already. And in a thousand different ways...

hotsauce · Apr 20th 2020

I'll check out unrar-nonfree and report back with my results tomorrow.

I'm currently using filezilla FTP to download the files, and as far as I can tell it is unable to trigger upon download completion. I've been googling around, and not having much luck on finding a solution that works for me. Any suggestions?

Adoby · Apr 20th 2020

You could use inotify. It is a catch-all solution.

It can trigger events when a file appear. It could start a script that checks if a download is complete and if so unrar.

Or simply brute-force it: Try to unrar everything that looks like a valid rar file every X minutes, again and again. Setup a cron task. And if/when the unrar is successful, have the script move the unrared files away.

Or slightly more finesse: Have a script check modified times or sizes of files in the download folder. When a file hasn't been changed in X minutes, try to unrar it. Try again after some other file has finished downloading.

Instead of brute-force unraring, try check files for completeness. Look for missing parts and only try to unrar if all files seem to be there.

Have a sensor detect when you approach the computer to look to see if it is done. Then have the software try to unrar everything. Then everything that can be unrared will be unrared as you are by the computer to check.

There are many, many other methods. What decide what method to use and if you succeed is only you and your automating/programming/scripting ability.

hotsauce · Apr 20th 2020

so i tried installing unrar-nonfree and got the same error as when I tried to install unrar. I'm guessing that means I need to add a repo?

Code

<me>:~$ sudo apt-get install unrar-nonfree
Reading package lists... Done
Building dependency tree
Reading state information... Done
Package unrar-nonfree is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source

E: Package 'unrar-nonfree' has no installation candidate
<me>:~$ sudo apt install unrar-nonfree
Reading package lists... Done
Building dependency tree
Reading state information... Done
Package unrar-nonfree is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source

E: Package 'unrar-nonfree' has no installation candidate

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Adoby · Apr 20th 2020

I guess you need to enable nonfree.

Google: "how do i enable nonfree packages in Debian" for details.

I use p7zip-rar with rar files. But it is far between them...

gderf · Apr 21st 2020

Enable the non-free repo and install the unrar package.

hotsauce · Apr 21st 2020

Quote from gderf

Enable the non-free repo and install the unrar package.

Is there a way to do it within the OMV webgui? I'm not seeing anything that refers to non-free in apt tool, OMV Extras or update management . Just want to make sure before I jump into command line.

gderf · Apr 21st 2020

Quote from hotsauce

Is there a way to do it within the OMV webgui? I'm not seeing anything that refers to non-free in apt tool, OMV Extras or update management . Just want to make sure before I jump into command line.

Not any more. The ability to add additional repos in the GUI was removed.

I have the below in my /etc/apt/sources.list

Code

deb http://security.debian.org/ buster/updates main contrib non-free
deb-src http://security.debian.org/ buster/updates main contrib non-free

deb http://ftp.us.debian.org/debian/ buster-updates main contrib non-free
deb-src http://ftp.us.debian.org/debian/ buster-updates main contrib non-free

hotsauce · Apr 21st 2020

Was able to add the repos and get unrar-nonfree downloaded and working, thanks!

I shall continue my research into an auto unrar solution.

hotsauce · Apr 25th 2020

gderf Adoby Do you guys know what the difference between unrar e and unrar x is supposed to be? It seems to behave the same way when I run the command, in that the unrar'd file ends up in the directory the command was called in.

e - Extract files to current directory.
x - Extract files with full path.

Adoby · Apr 25th 2020

I think that you get different results if the compressed files were a folder structure with subfolders. Then x would recreate the folder structure but e wouldn't.

halvliter · Aug 1st 2020

Quote from gderf
Not any more. The ability to add additional repos in the GUI was removed.

I have the below in my /etc/apt/sources.list
Code
deb http://security.debian.org/ buster/updates main contrib non-free
deb-src http://security.debian.org/ buster/updates main contrib non-free

deb http://ftp.us.debian.org/debian/ buster-updates main contrib non-free
deb-src http://ftp.us.debian.org/debian/ buster-updates main contrib non-free

I editet the text in /etc/apt/sources.list using nano to match your code-box, and tried sudo apt install unrar-nonfree afterwords. (After I sudo apt-get update)

Still gets

Code

root@debian:/# sudo apt-get install unrar-nonfree
Reading package lists... Done
Building dependency tree       
Reading state information... Done
Package unrar-nonfree is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source


E: Package 'unrar-nonfree' has no installation candidate

OMV 5 on Debian 10

gderf · Aug 1st 2020

Something with the repos changed since I posted that back in April. What I posted then was working.

You could just download the unrar package and install it by hand. You don't say what hardware platform you are on, so you will need to track down the correct package if different than amd64.

Code

wget http://ftp.us.debian.org/debian/pool/non-free/u/unrar-nonfree/unrar_5.6.6-1_amd64.deb
sudo dpkg -i unrar_5.6.6-1_amd64.deb

halvliter · Aug 2nd 2020

Thank you gderf, that did the trick for me!

Majorpayne · Aug 6th 2020

hotsauce did you get the auto unrar to work if not i have a cron job for you.

hotsauce · Aug 7th 2020

Quote from Majorpayne

hotsauce did you get the auto unrar to work if not i have a cron job for you.

Yes I did. When Filezilla finishes downloading, it triggers a script that unrars everything in a folder and then copies it to a different folder.

How to unrar multiple .rar files in OMV 5

hotsauce Apr 21st 2020

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