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Could anybody show me how to install fiddler on Ubuntu? I need to use it for web development.

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  • What is "fiddler"? It's not a Ubuntu package. Is there a .deb available? Does the "fiddler" website mention Linux?
    – waltinator
    Jun 5, 2017 at 16:22
  • fiddler is a web debugging tool and it is not a ubuntu package. As far as I know, fiddler is indeed supported by linux.
    – dullboy
    Jun 5, 2017 at 16:40
  • Is it the telerik version?
    – George Udosen
    Jun 5, 2017 at 17:03

3 Answers 3

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First things first:

  1. Install mono:

     sudo apt install mono-complete

  2. Download fiddler for Linux by clicking here and extract it.

  3. Then with mono installed run it with from the extracted directory:

     mono Fiddler.exe

  4. Or run with mono /path/to/extracted/fiddler/Fiddler.exe

enter image description here

Source:

https://www.telerik.com/download/fiddler

http://fiddler.wikidot.com/mono

UPDATE

The fiddler can be gotten from here and installed using the following commands:

  1. chmod a+x progress-telerik-fiddler.AppImage, to make the installer executable, and,

  2. ./progress-telerik-fiddler.AppImage: to install the fiddler.

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  • Does not work. Getting this error and Fiddler is crashing. [1] 8102 abort (core dumped) mono /home/curtis/Desktop/vjbl/fiddler-linux/Fiddler.exe Unable to attach: program terminated with signal SIGABRT, Aborted. No threads.
    – kwoxer
    Jul 10, 2019 at 11:40
  • @George Udosen You should probably update your answer. The version of Fiddler you linked is way outdated (2017). The new way to run Fiddler on Linux is by downloading the AppImage: telerik-fiddler.s3.amazonaws.com/fiddler-latest/… You can then you run ./fiddler.AppImage instead of mono fiddler.exe.
    – Forivin
    Mar 12, 2020 at 9:35
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    @forivin thanks will do that once I switch to my Ubuntu OS!
    – George Udosen
    Mar 12, 2020 at 16:28
  • Maybe is better to remove the old solution, or at least put the new first and the old later!
    – funder7
    Apr 5, 2020 at 14:14
  • Old method does not work now, but new fiddler appimage seems much less functional, so let it be. mono FiddlerSetup.exe Cannot open assembly 'FiddlerSetup.exe': File does not contain a valid CIL image.
    – Gryu
    May 15, 2020 at 16:12
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To install Fiddler on Ubuntu, use this link Fiddler Everywhere. You will be directed to download the AppImage file. Once the AppImage file is downloaded, the only thing you require is to make it executable by changing its permissions (Right-click on the file and selected properties. On the permissions tab, select Allow executing the file as program). To run the application, right-click on the file and select Run.

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Fiddler develop for Mono framework.

  1. Add the Mono repository to your system http://www.mono-project.com/download/#download-lin
  2. Download Fiddler for linux https://www.telerik.com/download/fiddler
  3. Extract archive with Fiddler and run Fiddler.exe (press right button and run with Mono)
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