unp is a small perl script which makes extraction of any archive files a bit easier. It support several compressors and archiver programs, chooses the right one(s) automatically and extracts one or more files in one go.
You may also want to install some non-free packages like “unace-nonfree”, “unrar-nonfree” and “lha” to extract archives of these types.
Install unp in ubuntu
sudo apt-get install unp
When you unrar multiple different rar files, put them in the same directory and , open the terminal there and do
unp *.part1.rarunp is a small script with only one goal: Extract as many archives as possible, of any kind and from any path to the current directory, preserving the subdirectory structure where needed. Is a Do-What-I-Want utility and helps managing several extraction programs without looking for needed options for the particular tool or worrying about the installation of the needed program.
In contrary to gunzip which decompresses the file in the target directory of the source file,unp will use current directory for output.