Check if composer is installed and run from bash script

Question

I'm trying to create a install.sh script that checks if all my dependencies are installed and then triggers the dependencies scripts.

#!/bin/bash

phpValidation() {
    if hash php 2>/dev/null; then
        echo 'we have php'
    else
        echo 'no php'
    fi
}

composerValidation() {
    if type -t composer ; then #this part does not work
        echo 'we have composer'
    else
        echo 'no composer?!'
    fi
}

It works fine for php and yarn, but because composer is an alias it does not get trigged through the script.

How can I check if composer is installed and then trigger it?

I would let the user config the cmd (path) used to trigger composer. — georgexsh
– georgexsh, Commented Nov 22, 2018 at 7:43

Ron Butcher · Accepted Answer · 2018-11-25 23:23:10Z

3

I found a pretty good script here and modified it to fit my needs.

Here is my simplified version I came up with in the end:

//  Check for composer
composer -v > /dev/null 2>&1
COMPOSER=$?
if [[ $COMPOSER -ne 0 ]]; then
    echo 'Composer is not installed'
else
    echo 'Composer is installed'
fi

answered Nov 25, 2018 at 23:23

Ron Butcher

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1 Comment

Helbo Over a year ago

and this works because COMPOSER is a environment variable holding what you just put in above ?

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