Final answer:
To downgrade the gcc version in Ubuntu, first remove the current version with 'sudo apt-get remove gcc', then install the desired version using 'sudo apt-get install gcc-x.x', replacing 'x.x' with the version number.
Step-by-step explanation:
To downgrade the version of gcc (GNU Compiler Collection) in Ubuntu, you will need to follow several steps. Please remember that downgrading software can sometimes lead to dependency issues and should be done carefully.
- Open a terminal window.
- Uninstall the current gcc version using the command: sudo apt-get remove gcc.
- Install the specific version of gcc you desire with the command: sudo apt-get install gcc-x.x, where 'x.x' is the version number. For example, if you want to install gcc version 7.5, you would type: sudo apt-get install gcc-7.5.
- If that version is not available through the standard Ubuntu repositories, you may need to add a PPA (Personal Package Archive) or download the gcc source code and compile it manually.
- After installation, you can check the gcc version with the command: gcc --version.
It is also recommended to update the alternatives system to ensure that the Ubuntu system uses the correct gcc version by default. This process can be done with the update-alternatives command.