Check ownership and permissions of a file.sh

#!/usr/bin/env bash


# Check ownership and permissions of a file
function checkPermissions() {
    file="$1"
    expectedOwner="$2"
    expectedPermissions="$3"
    expectedUid=`id -u "$expectedOwner"`

    uid=`stat -f "%u" "$file"`
    permissions=`stat -f "%Sp" "$file"`

    if [ "$uid" -ne "$expectedUid" ]; then
        return -1 
    fi
    
    if [ "$permissions" != "$expectedPermissions" ]; then
        return -1
    fi
    
    return 0
}