How to Update Composer in Ubuntu | Debian Systems

Update composer Ubuntu and Debian-based systems.

#update packages
$sudo apt-get update

#install curl if you don't have it
$ sudo apt-get install curl

#download composer 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

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