To set the $PATH permanently, set the path in your startup file. This directory exists in different locations based on your operating system; however, here is how you can do it in Debian.
Edit the startup file:
nano ~/.bashrc
And paste these lines at the end of the file:
alias laravel='~/.config/composer/vendor/bin/laravel'
export PATH="$HOME/.composer/vendor/bin:$PATH"
restart terminal with:
source ~/.bashrc
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