How to join *.001,*.002,… files from your Linux terminal

This is a easy way to combine/join/merge several .001 .002 .003 etc files to one file.

# cat filename.avi.* > filename.avi

The .001 .002 .003 files can be deleted after you have verfied that the files have merged together successfully to one file.

If you were using Windows you would normally use a software like HJSplit or similar.