package management – cannot open shared object file in rails

I’m ruby developer and I’m working on Ubuntu 19.10 yesterday my OS showed a message for updating to new version i accept that and every things is going fine after installation finished i start to use my computer to develop that found any rails command not works and showed me this error

in `require': cannot open shared object file: No such file or directory - /home/ace/.rbenv/versions/2.7.1/lib/ruby/gems/2.7.0/gems/ffi-1.13.1/lib/ (LoadError)

i found people with same issues but none of them have problem in rails and any of them is useful for me .

i think the problem is about package because ffi-1.13.1 is installed on my OS

composer – How to make laravel run automatically each time I open a new terminal?

I came from windows to Ubuntu and tried to install laravel following link I ended with the installer 1.4…. I don’t recall which one so I decided to use

composer global require "laravel/installer"

I ended with the installer 4.1.1 but if I close the terminal and open it again and run laravel it does not find the command. I found the following command searching for a solution PATH="~/.config/composer/vendor/bin:$PATH" I have to run this each time for the laravel command to work. Is there a permanent solution? I’m new to linux and I’m having so many issues and could not find a solution. I plan to update laravel but I cannot even get this running properly. Is there a better way? and would this affect my current project if I don’t run the mentioned command?

installing – “Process ‘Apache web server’ failed to start. Port 8083 didn’t open”

I’m trying to install Acquia Deve Desktop 2 for my windows 10 PC. When it’s finished installing and I run the program, an error pop up message shows up saying Process ‘Apache web server’ failed to start. Port 8083 didn’t open.


I should point out that I do have XAMPP installed in my PC, but I also read in the documentation that even if you have XAMPP installed, it won’t interfere.

What am I doing wrong here?

I just want my Drupal websites to load faster because on XAMPP they’re pretty slow.

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I’m Andrew, techno polymath and long-time LowEndTalk community Moderator. My technical interests include all things Unix, perl, python, shell scripting, and relational database systems. I enjoy writing technical articles here on LowEndBox to help people get more out of their VPSes.

php – What is the best option between buying, building from scratch or implementing an open source ERP?

I was required to do a medium ERP with the inventory, Bill of Materials, and production modules. However, I do not know how long it would take me.

I am calculating three months for the analysis and lifting of requirements, and 3 months per module. It is a company that manufactures cardboard boxes.

However, I don’t know if it would actually be something feasible, or I’m also considering the option of an open source ERP that is in PHP.

What is your opinion?

Thank you very much in advance. Good day.

compactness – Using an open and compact set to find another compact set within the original compact set.

I am trying to show that if U a subset of R^n is open, and K a subset of U is compact, then there is a compact set such that K is a subset of D^o and D is a subset of U.

I know that since K is compact and K is a subset of U, we can use the boundary of K (represented as delta(K) = K – K^o). I think I need to find a delta that can be used to find the biggest epsilon ball at any point on K and that would be the bound for D. I’m just stuck on how I find the value of delta. Can anyone help?

Open VZ

Hi whats up ya I have my server saying my laptop booting with Open VZ so I want to make virtualization testing please provide some incentive… | Read the rest of

Is there any good open source browser add-on that hides local time from websites for privacy?

As you know, websites can find your local system’s time and use it to approximate your country, so i was wondering is there any good open source addon for firefox or chromium that hides this?

I have ublock but I’m not sure if it does this or not?