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Asked: 2024-09-26T21:38:53+05:30 In:

What are the steps to decompress a CPGZ file on Ubuntu?

I’ve got this CPGZ file that I really need to get into, but I’m stuck on how to decompress it on my Ubuntu setup. I’ve seen a few random commands floating around on forums, but nothing seems to work consistently. I tried double-clicking it, thinking maybe the Archive Manager would do its magic, but all it did was create another CPGZ file, which is super frustrating.

It’s like chasing my own tail here! I’ve got a few files in there that I need for a project, and I’m on a bit of a deadline. I don’t want to just keep hitting my head against the keyboard, you know? Is there a reliable way to deal with this? I’ve heard that CPGZ files are just compressed files that got too compressed or something weird like that, and then they end up in this endless loop of zipping and unzipping.

If you’ve tackled this before, sharing your step-by-step process would be amazing. I’m assuming a terminal command is involved, right? Feel free to throw out the commands, along with any tips you’ve got on making sure I don’t end up with another useless CPGZ file. Also, if there are any tools or packages I should install beforehand, let me know that too. I just want to make sure I’m covering all my bases here.

Also, if it helps, I’m on Ubuntu 20.04, so if there’s anything specific to that version, I’d appreciate it. I really don’t want to get deep into the rabbit hole with this. Thanks in advance to anyone who can help me demystify this whole CPGZ conundrum! I just want to get back to working on my project without the fire drill of decompressing files constantly.

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    2 Answers


    1. To decompress a CPGZ file on your Ubuntu 20.04 system, you can use the terminal, which provides a more reliable method than double-clicking, which often leads to the endless compression loop that you’re experiencing. First, install the necessary packages if they aren’t already on your system. You might want to ensure you have ‘p7zip-full’ installed, which can handle various archive formats. You can install it by running the following command in your terminal:

      sudo apt-get install p7zip-full

      Once you have the necessary tools installed, you can proceed to decompress the CPGZ file. Navigate to the directory where your CPGZ file is located using the `cd` command. Then, run the following command to decompress it:

      7z x yourfile.cpgz

      This command should extract the contents of the CPGZ file. If it results in another CPGZ file, it may indicate that it’s a multi-layered compression, and you may need to repeat the extraction with the new file until you successfully extract the underlying files. Be wary of any prompts during extraction and follow on-screen instructions for successful decompression. If this process creates additional CPGZ files, keep using the `7z x` command on them until you reach the actual files you need. This method is generally the most effective way to handle CPGZ files on Ubuntu.



    2. Decompressing a CPGZ File on Ubuntu 20.04

      It sounds like you’ve run into the classic CPGZ problem, where your file is trying to unpack itself but gets stuck in a loop. Don’t sweat it; I’ve been there! Here’s a simple, step-by-step way to break that cycle and get your files.

      1. Install Required Tools

      You might need a couple of packages to ensure everything works smoothly. Open your terminal and type:

      sudo apt update
sudo apt install p7zip-full unzip

      2. Decompress the CPGZ File

      Now, let’s extract your CPGZ file using the terminal:

      1. Navigate to the directory where your CPGZ file is located. For example:
        2. cd /path/to/your/file
      2. Use the following command to extract the CPGZ file:
        3. gzip -d yourfile.cpgz
      3. If that doesn’t work and you still have a CPGZ file, try this instead:
        4. 7z x yourfile.cpgz

        (Replace yourfile.cpgz with the actual name of your file)

      3. Check for a Resulting File

      After running these commands, check to see if a new file or folder pops up. If it seems like nothing happens, sometimes a temporary file is created in the same directory. Just look for files that were created recently!

      4. In Case of Further Issues

      If you still end up with another CPGZ file:

      • It’s possible that the original file was corrupted. Try downloading it again.
      • Consider using alternative tools like unar:
        • sudo apt install unar
        unar yourfile.cpgz

      5. Final Tips

      Make sure to replace placeholder names with your actual file names. Keep an eye out for any error messages in the terminal—they can provide clues if something’s still not working.

      Good luck with your project! Once you get past this, it’ll be smooth sailing!


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