Hi there - First of all, let me clarify that the new and old trac-all have no differences in terms of usage, so all of this applies to both.

1. Yes, we did come across the issue of jot not being part of some platforms. It'll be fixed in the next release. If you're getting this error, you'll just have to specify the runlist explicitly in your config file instead of relying on the default, i.e., set runlist = (1 2 3 ...), however many subjects you have.

2. There's no increase in compute time by having a separate config file for each subject. Being able to specify multiple subjects in the same file with all other options being the same was just done for convenience.

Hope this helps, a.y

On Wed, 1 Feb 2012, Xiangzhen Kong wrote:

Hi, all I am using trac-all these days. But I came across two quetions:

1. If I don't Specify Subjects To Be Analyzed, which means running the analysis on all subjects, there is an error saying "jot: Command not found.".

The OS I am using is CentOS and I think jot is not installed by default. And some one says jot is part of freeBSD. Do we need to replace 'jot' in trac-all with other commands, such as seq?   2. If I run trac-all for just one subject each time,(that is to say, one config-file each subject), I wonder whether the time loss will be increase too much, compared with that one config-file for all subjects.   Thanks!     conxz     2012-02-01

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Xiangzhen Kong