Ubuntu – Problem in installing thesql2 in ubuntu 14.04 in virtual box

software installation

When I run this command, I got this error

$ sudo gem install mysql2
Building native extensions.  This could take a while...
ERROR:  Error installing mysql2:
    ERROR: Failed to build gem native extension.

Best Answer

You need to install a few mandatory packages for gem to work. Should be ...

sudo apt-get install libmysql-ruby libmysqlclient-dev

and after that

sudo gem install mysql2

will work.

Source.

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APT Package-Management Software-Installation – Problem Installing VLC Player

Don't use the PPA, install vlc from the Ubuntu repositories.

Remove the PPA you have installed:

sudo add-apt-repository --remove ppa:videolan/stable-daily

Empty the package cache:
```
sudo apt-get clean
```
Update your package lists:
```
sudo apt-get update
```

Downgrade/install all vlc packages to/in the repository version:

sudo apt-get install --reinstall vlc=2.1.2-2build2 vlc-data=2.1.2-2build2 vlc-nox=2.1.2-2build2 vlc-plugin-notify=2.1.2-2build2 vlc-plugin-pulse=2.1.2-2build2

Depending on your Ubuntu version, you might currently (Nov 20, 2015) get a VLC version up to 2.2.1-3 on Wily (15.10). Older Ubuntu versions might have older VLC versions in their repositories.

You check the versions available for you with the command:

apt-cache policy vlc

An example output on my 15.10 64bit system would be:

vlc:
  Installed: (none)
  Candidate: 2.2.1-3
  Version table:
     2.2.1-3 0
        500 http://[YOUR REPOSITORY SERVER URL]/ wily/universe amd64 Packages

Ubuntu – Problem installing build-essential. Broken packages error

I would start by verifying if you distro's main sources are enabled, If it's 15.10 your code name should be wily.

Open your sources file:

$sudo gedit /etc/apt/sources.list
Look for the following lines and uncomment them, save the file:

###### Ubuntu Main Repos
deb http://us.archive.ubuntu.com/ubuntu/ wily main
deb-src http://us.archive.ubuntu.com/ubuntu/ wily main

###### Ubuntu Update Repos
deb http://us.archive.ubuntu.com/ubuntu/ wily-security main
deb http://us.archive.ubuntu.com/ubuntu/ wily-updates main
deb-src http://us.archive.ubuntu.com/ubuntu/ wily-security main
deb-src http://us.archive.ubuntu.com/ubuntu/ wily-updates main
Update sources & retry installation:

$sudo apt-get update
sudo apt-get install build-essential

Best Answer

Related Solutions

APT Package-Management Software-Installation – Problem Installing VLC Player

Ubuntu – Problem installing build-essential. Broken packages error

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