missing sudo su
missing sudo su

Even if it is mentioned in the sentence above, it is handy to have it in the command line part.

If not you will end up with:

sh INSTALL_MANAGER.sh  USER
Installing dependencies
E: Could not open lock file /var/lib/apt/lists/lock - open (13: Permission denied)
E: Unable to lock directory /var/lib/apt/lists/
E: Could not open lock file /var/lib/dpkg/lock - open (13: Permission denied)
E: Unable to lock the administration directory (/var/lib/dpkg/), are you root?
E: Could not open lock file /var/lib/dpkg/lock - open (13: Permission denied)
E: Unable to lock the administration directory (/var/lib/dpkg/), are you root?
Downloading and copying IntelMQ Manager
fatal: destination path '/tmp/intelmq-manager' already exists and is not an empty directory.
cp: target '/var/www/' is not a directory
chown: cannot access '/var/www/': No such file or directory
Adding www-data to intelmq group
usermod: Permission denied.
usermod: cannot lock /etc/passwd; try again later.
INSTALL_MANAGER.sh: 17: INSTALL_MANAGER.sh: cannot create /etc/sudoers: Permission denied
sch3m4/intelmq-manager,sch3m4/intelmq-manager,sch3m4/intelmq-manager,sch3m4/intelmq-manager