Sams Teach Yourself Perl in 24 Hours

Summary

In this hour, you learned a few ways of storing data between invocations of your Perl programs. First you learned about DBM files and how they can be used to tie a hash to your hard disk. Next you learned about text files and how they can be used for simple database purposes. Finally, to prevent problems with concurrent access to files, you learned about how to lock files and keep data safe.