# Is it possible to undo my mistake **URL:** \ **Category:** GNU Radio\ **Created:** [April 28, 2015, 1:45am UTC](https://www.ruby-forum.com/t/is-it-possible-to-undo-my-mistake/241739 "2015-04-28T01:45:36Z")\ **Posts on this page:** 11\ **Page:** 1
**Author:** ![Detlef\_R](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/d/58f4c7/32.png) [@Detlef\_R](https://www.ruby-forum.com/u/Detlef_R)\ **Post date:** [April 28, 2015, 1:45am UTC](https://www.ruby-forum.com/t/is-it-possible-to-undo-my-mistake/241739/1 "2015-04-28T01:45:36Z")
Dear all, I followed a tutorial online to install a sdr software and accidentaly deleted files from my gnuradio installation. It took me a very long time to manage to set up everyting so before I start from the beginning I wanted to ask you if it is possible to undo my mistake. I am on Ubuntu 14.04 LTS and did: cd user/local/lib sudo rm libgnuradio\* Now when I run gnuradio-companion I get: _Cannot import gnuradio._ _Is the python path environment variable set correctly?_ - All OS: PYTHONPATH\* _Is the library path environment variable set correctly?_ - Linux: LD\_LIBRARY\_PATH\* - Windows: PATH\* - MacOSX: DYLD\_LIBRARY\_PATH\* Thank you all! ---
**Author:** ![calvin76](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/c/9de053/32.png) [@calvin76](https://www.ruby-forum.com/u/calvin76)\ **Post date:** [May 4, 2015, 1:02pm UTC](https://www.ruby-forum.com/t/is-it-possible-to-undo-my-mistake/241739/2 "2015-05-04T13:02:54Z")
Thank you very much for the answers. I removed gnuradio by deleting my pybombs folder and deleting all files with gnuradio in the filename from my computer. Then I installed pybombs again and used it to install gnuradio. However now I have two problems that I didn’t had before. 1. When I run the command: “gnuradio-companion” it doen’t work if I don’t first run “source ~/target/setup\_env.sh”. 2. When I run a flowgraph in grc with a scope sink I get the error message: “Can’t load image from file ‘/usr/share/icons/hicolor/32x32/apps/gnuradio-grc.png’: file does not exist.” Thank you so much for any help. I am new to Ubuntu so that’s probably my problem… Best regards Carl ---
**Author:** ![calvin76](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/c/9de053/32.png) [@calvin76](https://www.ruby-forum.com/u/calvin76)\ **Post date:** [April 28, 2015, 1:57am UTC](https://www.ruby-forum.com/t/is-it-possible-to-undo-my-mistake/241739/3 "2015-04-28T01:57:18Z")
Probably not without knowing exactly what was accidentally deleted. What process do you use to install gnuradio that is so difficult to start over with? What OS? On Ubuntu 14.04 using pybombs, it takes me about 35 minutes to completely wipe gnuradio from my machine to having it fully installed again. This should be possible for you too, assuming a standard setup. v/r, Rich On Mon, Apr 27, 2015 at 4:41 PM, Carl O. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) ---
**Author:** ![calvin76](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/c/9de053/32.png) [@calvin76](https://www.ruby-forum.com/u/calvin76)\ **Post date:** [May 4, 2015, 4:06pm UTC](https://www.ruby-forum.com/t/is-it-possible-to-undo-my-mistake/241739/4 "2015-05-04T16:06:56Z")
Add that source command to your .bashrc file which is located in your home directory. It is a hidden file. Every time you open a new terminal, the commands in .bashrc are automatically executed for you. After you add that line, make sure you close all old terminals and use new ones. The second problem is odd. You’ve made sure the file exists at the location? If it does, then I would ask if you are using WX Gui components? They are being phased out and have been discussed as having issues lately on the mailing list. I never use them. I would recommend replacing them all with QT components and trying that. Make sure you change the gui option in your options block too. Rich Sent from my iPad ---
**Author:** ![calvin76](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/c/9de053/32.png) [@calvin76](https://www.ruby-forum.com/u/calvin76)\ **Post date:** [May 5, 2015, 9:17pm UTC](https://www.ruby-forum.com/t/is-it-possible-to-undo-my-mistake/241739/5 "2015-05-05T21:17:47Z")
Hi, Thank you very much for the help! Now it works, for some reason the solution to the first problem also solved the second or something else did. Best regards, Carl ---
**Author:** ![calvin76](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/c/9de053/32.png) [@calvin76](https://www.ruby-forum.com/u/calvin76)\ **Post date:** [May 5, 2015, 9:29pm UTC](https://www.ruby-forum.com/t/is-it-possible-to-undo-my-mistake/241739/6 "2015-05-05T21:29:28Z")
No sorry It doesn’t work yet… I have a HackRF, and before I reinstalled gnuradio I found out that if I use an Osmocom source I get an error saying no supported device found. But if I started gnuradio with the command “sudo gnuradio-companion” then it all worked. However now when I do “sudo gnuradio-companion” I get “sudo: gnuradio-companion: command not found”. If I do: cd target, cd bin, sudo ./gnuradio-companion I get -\> _Cannot import gnuradio._ _Is the python path environment variable set correctly?_ - All OS: PYTHONPATH\* _Is the library path environment variable set correctly?_ - Linux: LD\_LIBRARY\_PATH\* - Windows: PATH\* - MacOSX: DYLD\_LIBRARY\_PATH\* Thank you very much in advance if someone knows how to fix this. Best regards, Carl ---
**Author:** ![calvin76](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/c/9de053/32.png) [@calvin76](https://www.ruby-forum.com/u/calvin76)\ **Post date:** [May 11, 2015, 7:39pm UTC](https://www.ruby-forum.com/t/is-it-possible-to-undo-my-mistake/241739/7 "2015-05-11T19:39:21Z")
Safest for GNU Radio is package manager. Can’t speak for HackRF, but you can always use PyBOMBS. If you install GNU Radio through apt-get, and then HackRF through PyBOMBS, you might need to set GNU Radio as already installed in PyBOMBS. Cheers, Martin ---
**Author:** ![calvin76](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/c/9de053/32.png) [@calvin76](https://www.ruby-forum.com/u/calvin76)\ **Post date:** [May 11, 2015, 7:53pm UTC](https://www.ruby-forum.com/t/is-it-possible-to-undo-my-mistake/241739/8 "2015-05-11T19:53:57Z")
You can also get hackrf libs through Ubuntu’s package manager. Whatever install method you choose it is best to avoid deleting installed libraries unless you really know what you are doing. -Nathan On Mon, May 11, 2015 at 12:37 PM, Martin B. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) ---
**Author:** ![calvin76](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/c/9de053/32.png) [@calvin76](https://www.ruby-forum.com/u/calvin76)\ **Post date:** [May 11, 2015, 7:36pm UTC](https://www.ruby-forum.com/t/is-it-possible-to-undo-my-mistake/241739/9 "2015-05-11T19:36:25Z")
Hi all, I couldn’t solve my problems so I decided to reinstall Ubuntu 14.04 LTS from the beginning on my hp elitebook 8460p. What is the safest (highest probability of working) way of installing gnuradio (and hackrf tools)? I just need a simple installation. Pybombs, build script, package manager or something else? Best regards, Carl ---
**Author:** ![calvin76](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/c/9de053/32.png) [@calvin76](https://www.ruby-forum.com/u/calvin76)\ **Post date:** [May 11, 2015, 11:15pm UTC](https://www.ruby-forum.com/t/is-it-possible-to-undo-my-mistake/241739/10 "2015-05-11T23:15:30Z")
But if you get hackrf libs through Ubuntu’s package manager, do so before building anything related to HackRF (i.e. before running pybombs, especially before installing gr-osmosdr); The problem is that a program links against a specific ABI of a library – in general, against _exactly_ the same version of the library that was there when the program was being built. This means that getting hackrf /libhackrf0 from Ubuntus repositories will not make your version of GNU Radio built before that installation use that library – you’ll have to recompile gr-osmosdr to get that functionality. In fact, if you just use pyBombs’ default setting of installing from deb if a sufficient version can be found, Hackrf/libhackrf will automatically be installed from Ubuntu’s repos if you pybombs install gr-osmosdr So, my way of doing this would be, on a freshly set up system (with nothing related to this previously installed): - getting pybombs - (sudo) ./pybombs install gnuradio gr-osmosdr and you should get a running system – Ubuntu 14.04 is probably the most prolific target for pybombs these days, and the defaults should be “pretty safe”. Best regards, Marcus ---
**Author:** ![calvin76](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/c/9de053/32.png) [@calvin76](https://www.ruby-forum.com/u/calvin76)\ **Post date:** [May 24, 2015, 6:44pm UTC](https://www.ruby-forum.com/t/is-it-possible-to-undo-my-mistake/241739/11 "2015-05-24T18:44:54Z")
Thank you all for the help. I ended up installing it from the package manager and now it works fine. Best regards, Carl