If you need to run recon-all many times (eg, you have many subjects),
then you can run the following commands (in cshell) to launch many
commands. Below, the script cd's into the $SUBJECTS_DIR where it is
assumed th that the only files or folder that are there are your
subjects' folders. In this case, they must have already been
set up with the raw data in $SUBJECTS_DIR/$subject/mri/orig/
If you have many processors and enough memory, you can
process many simultaneously by adding an ampersand (&) after 
recon-all -subjid $i -all (eg, "recon-all -subjid $i -all&")

{{{
cd your_study_group_data
setenv SUBJECTS_DIR $PWD
foreach i (*)
echo $i
recon-all -subjid $i -all
end
}}}

Wait some days...