Ubnutu/MySQL - Error "Unable to locate package innotop" I am using Ubuntu 12.04.2 LTS, with MySQL 5.5.29.  

Im trying to install innotop for database monitoring, but getting an error "Unable to locate package innotop"

root@server1:~# apt-get install innotop
Reading package lists... Done
Building dependency tree       
Reading state information... Done
E: Unable to locate package innotop


I checked the Ubuntu package site at http://packages.ubuntu.com/search?keywords=innotop&amp;searchon=names&amp;suite=raring&amp;section=all
and there is no mention, but I know I used to see it there.

root@server1:~# apt-get update


did not help.

I think I might have once had this problem before, and fixed it by installing some prerequisite, but I cant recall anymore.

I checked Google for the error message, but no mention.
It seems to be in the file list for mysql-client-5.5.

sudo apt-get install mysql-client-5.5 should be all you need to do.

Note that the mysql client program is in a separate package, mysql-client-core-5.5, so it's possible to have mysql installed without any of the other useful tools like mysqladmin or mysqldump.