How to extract files from a split 7zip archive ended by .001 and .002?

I have two files data.7z.001 and data.7z.002. l tried to extract them using :

7z e asdf data.7z.001

l got this error

 7-Zip [64] 9.20 Copyright (c) 1999-2010 Igor Pavlov 2010-11-18 p7zip Version 9.20 (locale=en_US.UTF-8,Utf16=on,HugeFiles=on,4 CPUs)
Error:
there is no such archive

and

7z x /home/Desktop/data.7z.001 -tufd.split -o/home/Desktop/

error :

Error:
Unsupported archive type

and

7z x /home/Desktop/data.7z.001 -tiso.split -o/home/Desktop/

error :

Error:
Unsupported archive type

2 Answers

7z x data.7z.001

7z like that will find the others automatically (002 003 and so on)

I continued getting an "Unknown format" error until doing the following:

7z e file.7z.001 -tsplit