# groupadd -g 1001 informix
# useradd -u 1001 -g informix informix
# passwd informix
Password: informix
# cd /tmp/informix
# tar xopf iif.12.10.FC12DE.linux-x86_64.tar
# ./ids_install
# cd /opt/IBM/Informix_Software_Bundle
# source ol_informix1210.ksh
Secure the installation by change mode to 755
for /opt/IBM
:
# chmod 755 /opt/IBM
Now you may start the Informix DB Service
# oninit -i