SSH is not only the secure replacement for rlogin, rsh and telnet, which has been used in the past to do remote administration work, but there are also neat tricks like port forwarding, vpn tunneling and file transfers that you can do with minimal configuration work, leaving only one port open to the internet.read full article..
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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