N
composer remove vendor/package
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##update composer in ubuntu
#update packages
sudo apt-get update
#if you don't have curl install it
sudo apt-get install curl
#download installer
sudo curl -s https://getcomposer.org/installer | php
#move composer.phar file
sudo mv composer.phar /usr/local/bin/composer
#check composer version
composer -v
N
composer remove vendor/package
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Delete the file composer.phar.
Delete the Cache Folder:
Linux: /home/<user>/.composer
Windows: C:\Users\<username>\AppData\Roaming\Composer
N
composer global remove laravel/installer