Error when trying to self-update composer

问题

when I trying to self-update composer I get "Permission denied" error message, but when I try to do same command with "sudo" - I get error message "command not found". Please help me..

回答1:

In terminal with sudo I type full path to composer.phar and it's work for me!

sudo /usr/bin/composer.phar self-update

回答2:

For me this worked:

sudo -H composer self-update

来源：https://stackoverflow.com/questions/28679994/error-when-trying-to-self-update-composer