Remove composer

During the installation you got a message Composer successfully installed to: ... this indicates where Composer was installed. But you might also search for the file composer.phar on your system.

Then simply:

Delete the file composer.phar. Delete the Cache Folder: Linux: /home//.composer Windows: C:\Users\\AppData\Roaming\Composer

That's it.

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Uninstall composer

To remove just composer package itself from Ubuntu 16.04 (Xenial Xerus) execute on terminal:

sudo apt-get remove composer

Uninstall composer and it's dependent packages

To remove the composer package and any other dependant package which are no longer needed from Ubuntu Xenial.

sudo apt-get remove --auto-remove composer

Purging composer

If you also want to delete configuration and/or data files of composer from Ubuntu Xenial then this will work:

sudo apt-get purge composer

To delete configuration and/or data files of composer and it's dependencies from Ubuntu Xenial then execute:

sudo apt-get purge --auto-remove composer

https://www.howtoinstall.co/en/ubuntu/xenial/composer?action=remove

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Additional information about removing/uninstalling composer

Answers above did not help me, but what did help me is removing:

~/.cache/composer ~/.local/share/composer ~/.config/composer

Hope this helps.

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If you install the composer as global on Ubuntu, you just need to find the composer location.

Use command

type composer

or

where composer

For Mac users, use command:

which composer

and then just remove the folder using rm command.

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curl -sS https://getcomposer.org/installer | sudo php
sudo mv composer.phar /usr/local/bin/composer
export PATH="$HOME/.composer/vendor/bin:$PATH"

If you have installed by this way simply

Delete composer.phar from where you've putted it.

In this case path will be /usr/local/bin/composer

Note: There is no need to delete the exported path.

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Find the Location of the Composer by typing this command

whereis composer

Then You will get the output like this

composer: /usr/local/bin/composer

then cd /usr/local/bin/

then remove composer by this command

sudo rm -r composer

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