PDFSAM and JAR files

PDF Split and Merge (PDFSAM) is a nice utility to split and merge PDFs. Just download the program and unzip it into its own folder (I'll assume you call the folder pdfsam). Stick the new folder in /opt and then create a launcher with the following command in the command box:

java -jar /opt/pdfsam/pdfsam-1.0.3.jar

Note that the name of the file will depend on what version you download.

Also, the command "java -jar" is the basic command to run jar files. You just have to have jre installed.

Sources:
PDF Split and Merge
PDF Split and Merge Instructions
JAR Files