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May 2001

SSH- The Secure Shell 
- Everything you'd ever need to know about SSH. Well written, very complete- I liked this book! Some of the Amazon reviewers weren't quite so happy with it (one found the lack of NT coverage disappointing), but I enjoyed it start to end. I particularly liked that important concepts were always well explained and not just glossed over.
Unix- The Complete Reference 
- Well, of course it really isn't the "Complete Reference". Even at 1300 pages, you can't really do that, especially when you are trying to cover Linux, Solaris, and HP-UX. Nevertheless, this book makes a valiant effort, and at least briefly touches upon everything you probably need to know. This would probably be a good starting point for a Windows oriented person who suddenly finds themselves responsible for Unix machines.
Shell Bashing 
- As we know, Kevin wanted his script to run when he logs in. If he had been running /bin/sh instead of bash, he would have called his script from .profile, but bash gives you more choices.
Shell Bashing 
- It was about three o'clock on a Thursday afternoon when Kevin called me. I remember the time because I had just been thinking about knocking off early. It had been a hard week, and the P&L was looking good, so I was ready for a break. Then my cell phone chimed, and when I pushed "Talk", Kevin's voice was in my ear.
- Although "ssh" stands for "Secure Shell", it is not a shell like sh, csh or ksh. Rather, think of it as a way to secure your shell, whatever it is. Secure in this context means encrypted conversations between your machine and some other machine, and that's just about all it means: it doesn't mean that your system or even the system you are ssh'ing to are immune to break-ins or other security breaches and it doesn't necessarily even mean that you can be 100% sure that you really are even connected to the machine you think you are connected to (though you can be pretty sure- more on that below). Encrypted connections are really all that ssh does- everything else that the ssh suite includes, like the ability to copy files or run remote commands, is really just tools added to use the encrypted communications channel.