Q:

Installation and configuration of an SNMP client

I want to install a SNMP client (NOT AGENT) on my computer so I can connect to a Cisco Router on which an SNMP agent is already installed. 
The problem that all the documentation I found for Ubuntu were for installing an agent not a client. 

A:

As suggested, you should use snmpwalk or snmpget in a script. 
The package containing snmpwalk and snmpget is "snmp" and the correct syntax for install is:
sudo apt-get install snmp

instead of "get-apt install snmp snmpd mbrowse"
After install, you can do a complete snmpwalk to discover wich of the informations you need from your cisco device and later filter them using snmpwalk otions. 
Example: 
snmpget -v1 -c public 192.168.0.254 .1.3.6.1.4.1.11.2.14.11.5.1.1.2

Hope this helps!