Ensure you are installing from a *minimum* of the Fixpack-2 image for the db2 server if your target operating system for the db2 server is Ubuntu 12.04, per the IBM software prereqs for product page.
At current date the most recent fixpack for V10.1 is Fixpack-3.
Additionally, as "n_i" already pointed out in a different pos, you must first resolve the most obvious error in the log file, db2setup did not find the 'rpm' tool.
This is a prereq.
I have DB2_ESE_10_Linux_x86-64.tar.g ( 10.1 original) ~ 1.2G size
Also I have : v10.1fp3_linuxx64_server.tar.gz (PF3 ) ~ 770 G size
As per the advice: since I fail installing the original 10.1 (via db2setup) on ubuntu 12.4 ,I try db2setup from the FP3 ( there is no preinstalled DB2) but also fail in a similar way
BTW: Is there a FP3 unified with the original 10.1 ? because maybe the 770G is not enough as a first installation ? where to get it from ?
Below is the error I get from db2setup from FP3 . This is similar to what i got from installing 10.1 which hints that missing higher PF is not the reason I failed installing original 10.1 .
Note the db2prereqcheck for FP3 (as well as 10.1) finishes with no error .