In order to install under Linux, you will need super user rights.
Download the archive which matches your Linux version and expand it on your computer, in the root folder. You need to have GTK+2.0 installed on your machine to launch ECMerge. The default installation includes the version of libstdc++6 (compiled with G++ 4), libuuid and libiconv 1.9.1 that ECMerge needs to work. ECMerge is built as a 32 bits executable currently, so that you 32 bits versions of the packages (see ia32 for Debian derived and "*-32bit-*" RPMs).
If you want to upgrade them, please follow the instructions in README.txt file that you will find in the installation directory (/opt/elliecomputing/ecmerge). ECMerge uses xsltproc by default to generate HTML reports and comparison statistics. Nevertheless, you can use any other XSLT processor.
Using the following command should install the soft: tar -Pxvjf ecmerge.linux.XXX.x86.tbz
The evaluation of Ellié Computing Merge does not require a Serial Number. Your can freely evaluate ECMerge during 30 days of acutal use. More infos.