Permission denied when trying to self-update composer

Question

When I am trying to self-update my composer, I get "Permission Denied" error.

Even when I use sudo /usr/bin/composer.phar self-update, it shows me command not found.

Please help me I have no idea about composer

Caine

try su instead of sudo – Akene

Try to call it with PHP directly. php composer.phar selfupdate – Milestone

it show an error message su: Sorry – Caine

@Milestone It show me` Could not open input file: composer.phar` when trying Could not open input file: composer.pharv – Caine

Well, you have to give its full path if the .phar file is not in your current directory. – Milestone

pharv you have an extra v.. from pasting? – Uprear

currently i face sudo: /usr/local/bin/composer.phar: command not found problem sry typing error just now – Caine

Add -vvv to the command to get full verbose debugging output. Without that it's just a guessing game. – Susceptible

sudo -H composer self-update fix my bug – Caine

This worked for me check if composer is in dir and check complete file name in this case I don't have .phar extension: sudo /usr/local/bin/composer self-update – Mcnally

Answer 1

Try following command:

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

Make sure composer.phar file exist in "/usr/bin"

Execution

i'm having same error as above. and the composer.phar file does not exist in the usr/bin. – Credenza

You can try this command even when composer self-update is giving error of Permission Denied. – Sorcerer

Please note that (currently) running the selfupdate command with sudo, changes the owner of the cache directories inside your current users homedir. In order to avoid derived permission problems, change back ownership of the cache directories: sudo chown -R <user>:<group> /home/<user>/.composer – Sanies

Answer 2

CentOS7

sudo /usr/local/bin/composer self-update

Stigmasterol

Answer 3

here are the instructions from the composer maintainers

On the official Composer website (getcomposer.org) in the section headed "self-update", the maintainers give the following information:

If you have installed Composer for your entire system (see global installation), you may have to run the command with root privileges

sudo -H composer self-update

If Composer was not installed as a PHAR, this command is not available. (This is sometimes the case when Composer was installed by an operating system package manager.)

what's sudo -H?

from man sudo:

-H, --set-home

Request that the security policy set the HOME environment variable to the home directory specified by the target user's password database entry. Depending on the policy, this may be the default behavior.

Daigle