The libraries which Linux take as a reference related to updates are different from each other. In addition to this, command lines in some processes are different from each other.

For instance when you want to update on Ubuntu server via command line apt-get update command line is used however zypper update command line is used for Suse server.

According to operating system, update command lines are:

Ubuntu:

apt-get update
CODE

Suse:

zypper update
CODE

Debian:

apt-get update
CODE

CentOS:

yum update
CODE

Fedora:

yum update
CODE