Homework & Coursework Questions

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1. The problem statement, all variables and given/known data:
The assignment is to convert a text table to csv format. I've got the cleaning up done, but I need to swap two columns to finish the quesiton.
IE: I need
A1, B1, C1
A2, B2, C2

to turn into
A1, C1, B1
A1, C2, B2

2. Relevant commands, code, scripts, algorithms:
I'm allowed to use sed. All the solutions I've managed to find involve using awk and I'm not allowed to use that at the moment.


3. The attempts at a solution (include all code and scripts):
This is a modification of the eample he gave us. Unfortunately, when I try to modify it much, I either completely garble the table or get no change at all

s/^\(..*\)\(..*\)/\2 \1/

I don't want someone to give me the answer, I would just like a nudge or two in the direction I need to go. I guess what I don't understand is how to delimit the searching patter such that it selects and replaces the field I want. If I understood that, I'd probably be in a lot better shape.


4. Complete Name of School (University), City (State), Country, Name of Professor, and Course Number (Link to Course):
Arizona State University, Tempe, AZ, USA. Dr Mazolla. CIS 494,
http://drdan.dmazzola.com/

Note: Without school/professor/course information, you will be banned if you post here! You must complete the entire template (not just parts of it).

Thanks for any help you guys can provide.