Most Linux distributions have upgrade paths with their installation. They are, however, usually only useful for a sub-release upgrade, such as from 7.1 to 7.2 or 7.3. However, I have yet to run into one that will successfully and cleanly upgrade from one release to the next full release -- they all suggest a clean install, including Red Hat and SUSE. When migrating from one distribution to another, regardless of whether you choose install or upgrade, the process simply fails because it is unable to successfully install numerous packages.more...
The standard Perl distribution comes with a debugger, although it's really just another Perl program, perl5db.pl. Since it is just a program, I can use it as the basis for writing my own debuggers to suit my needs, or I can use the interface perl5db.pl provides to configure its actions. That's just the beginning, though. read more...
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