Perl VIII - Modules - Problem Set

0. Download and install a module using CPAN
on the iMac in front of you, open a Terminal window and type the following:
$ su admin
password is admin

$ sudo perl -MCPAN -e 'shell'
password is admin
say yes to any questions the CPAN shell asks you

cpan> install Math::Round

then, once it's installed, write a short script that uses the round() to round any numbers entered as arguments on the command line.

1. Take the subroutine that you created in the subroutines problem set, and make it into a module.

2. Modify your script from the subroutines problem set so that it now calls that subroutine from the module.


3. Modify the module to automatically export the subroutine by default.

4. (optional bonus question) Write a script to read FASTA files. Make a module with four subroutines.

Each subroutine will take a FASTA sequence as input. Then, write one subroutine for each of the following:

- getting the name (sequence ID) of the sequence
- getting the description of the sequence
- getting the sequence itself
- reformatting the sequence to be a user-specified number of characters
  per line