Composer Kurulumu Ve Globalleştirme

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Then your system probably already has curl installed, but it’s always better to be sure, so proceed to run it:
:~$ sudo apt install curl
Curl is a program that serves to download files from the Internet using the terminal. Obviously it’s not limited to this, but let’s say that many people use it just for this.
Then download the installed Composer and run it with PHP. All this can be done from a single line.
:~$ curl -sS https://getcomposer.org/installer | php
 
To make Composer globally available, move it to the binary folder, change the permissions, and refresh the user’s bash profile.
:~$ sudo mv composer.phar /usr/local/bin/composer
:~$ sudo chmod +x /usr/local/bin/composer
:~$ source ~/.bashrc
Then, check that the command works correctly, you just have to use it and, for example, show the version of it.
:~$ composer -v