I would use a for loop in the shell:
for aNum in {1..100}
do
3dTcat -prefix subj001_${aNum}.nii "input_file+orig.HEAD[$aNum]"
done
You could get more fancy by using 3dinfo -nt to get the total number of time points.
Edited 2 time(s). Last edit at 03/08/2013 01:15PM by Peter Molfese.