create a file appending specified columns.

[rvarman]

Hi All,
I want to create a new file from n input files, appending fields in the right positions to the output file.
There are four fieds separated by ; in the input files.
The length of each line of the output field shd be first fixed to say 100.
Then the the fields shd be added to the corresponding positions to the output file.

Could anyone give me an idea.
Thanks

 

[Salem]

These two commands may be of some use

http://www.rt.com/man/join.1.html

http://www.rt.com/man/cut.1.html