dankamongmen/atem — comment on commit 43deceff4c6afe5bc664866369e1028a6e62d244
File:  line 0
By rudimeier:

Hi Nick, in case you have a shell available in your environment you could do the atemsprayer stuff also by using this one liner
atem -s -n -f 0041000 /path/to/data | while read -r symbol fnum ;do atem --fdat $fnum /path/to/data > bla/$symbol.csv; done
or have a look at "man 1 csplit".