software errors / problem solutions

How to fix “Configuration File (php.ini) Path” no value

Posted by Alex On April 17, 2021

The phpinfo function shows complete information about the PHP environment, including which modules are enabled, where the configuration files are located, with which options the PHP binaries were compiled, and much more.

To use this function in the web server folder create a file and copy (more…)

Error “ruby-bundler: /usr/share/man/man5/gemfile.5.gz exists in filesystem (owned by ruby)” (SOLVED)

Posted by Alex On April 12, 2021

Whenever operating system packages are updated (as well as when new packages are installed), in addition to checking dependencies, package managers also check that there is no file conflict. That is, a package containing files that are already on disk and do not belong to this package will not be (more…)

Connection type “Bridged Adapter” stopped working on VirtualBox guest machine (SOLVED)

Posted by Alex On April 7, 2021

In the settings of the virtual machine on the “Network” tab, you can select the type of network connection. The most common types are NAT and Bridged Adapter.

NAT: for a virtual computer, its own local network is created, which has an Internet connection. This computer is not accessible (more…)

Search engine ad: why nothing was found and why it doesn’t show ads

Posted by Alex On April 1, 2021

The ability to set up custom Google searches on your site has been available for at least a decade. Including displaying ads. But now there is a special block in AdSense called “Search engine”.

What is the profitability of search pages

Approximately 1 person out of 100 (more…)

Ubuntu in VirtualBox does not stretch to full screen although Guest Additions are installed (SOLVED)

Posted by Alex On March 27, 2021

1. Are the Guest Additions actually installed?

First, make sure you actually have Guest Additions installed.

It is recommended to update the guest OS to the latest package versions:

sudo apt update
sudo apt full-upgrade

After the update is complete, restart your computer:

reboot

There (more…)

Error “Failed to talk to init daemon” (SOLVED)

Posted by Alex On March 27, 2021

You can use command line to shutdown Linux computer, following command will shutdown computer:

shutdown -h now
systemctl halt

To reboot, you can use the following command:

systemctl restart

They usually work fine, but on some distributions they require elevated privileges, (more…)

How to find and remove non-UTF-8 characters from a text file

Posted by Alex On March 14, 2021

Filtering invalid UTF-8 characters

Files that, in addition to ordinary characters, contain characters that are invalid from the UTF-8 point of view, cause a problem both when they are processed by utilities and when opened in text editors.

An example of an error in Python 3 when trying (more…)

pacman error “warning: failed to retrieve some files” (SOLVED)

Posted by Alex On March 3, 2021

This article focuses on errors that occur due to problems with the mirror list.

pacman error “The requested URL returned error: 404”

There is a cache for the package manager to work – this cache contains information about existing packages for installation, their versions (more…)

Password and unix_socket authentication in MySQL and MariaDB. Error “#1698 – Access denied for user ‘root’@’localhost’” (SOLVED)

Posted by Alex On February 26, 2021

How to fix #1698 – Access denied for user ‘root’@’localhost’

In the latest versions of MariaDB (possibly MySQL), unix_socket authentication is used by default. If you are not familiar with it, then you might have encountered the error “#1698 – Access denied for (more…)

How to run “bundle install” as root

Posted by Alex On February 20, 2021

The “bundle install” command does not allow you to run it as root. For example, the following sequence of commands will fail:

gem update --system
xcode-select --install
gem install nokogiri
bundle install

The last command will show an error:

Don't run Bundler (more…)