* several CPAN modules such as Archive::BagIt (0.065 or higher)
*`cpan -d Archive::BagIt` to check module perl version
## Three ways to install a module
* with cpan `cpan Archive::BagIt`
* with cpanm `cpanm Archive::BagIt` (NOTE: `cpan App::cpanminus` must be installed. If errors like IO:AIO are present, use `cpanm -i -f Archive::BagIt`).
* from source (Linux)
1. Download for example Archive-BagIt-0.069.tar.gz from [metacpan Archive::BagIt](https://metacpan.org/pod/Archive::BagIt)
2. Extract it with `tar zxf Archive-BagIt-0.069.tar.gz` and go to project dir with `cd in Archive-BagIt-0.069`
1. Download for example Archive-BagIt-0.072.tar.gz from [metacpan Archive::BagIt](https://metacpan.org/pod/Archive::BagIt)
2. Extract it with `tar zxf Archive-BagIt-0.072.tar.gz` and go to project dir with `cd in Archive-BagIt-0.072`
3. Run `perl Makefile.pl`
4.`(d)gmake`
5.`(d)gmake test`
6.`(d)gmake install`
7. with `cpanm Archive::BagIt` test for the version. Result will be something like `Archive::BagIt is up to date (0.069)`.
7. with `cpanm Archive::BagIt` test for the version. Result will be something like `Archive::BagIt is up to date (0.072)`.
## Archive::BagIt module
* Sometimes it is offered to update module to a new version