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Just my 2 cents but formatting tables and such around this output would best be done in Perl or Python where it would only add a few lines more. In BASH this could almost double your script size I...

I'm pretty new to the database world and I've run into a mental block of sorts. I've been unable to find the answer anywhere. Here's my problem: I have several tables and everything is as normalized...

So you want to be emailed whenever someone logs in? One way that may work is to add a line to /etc/bashrc (if that's the default shell for all users). You may be able to add something like:
mail -s...

You could probably find this information in BIOS but you may not want to reboot the machine. Check out this page (http://docs.sun.com/app/docs/doc/806-4073/6jd67r9hs?a=view). I don't really know...

This is the Visual Bell. If you were physically at the server you would probably here a beep instead. This can be disabled in the PuTTY options. Also, if you are using GNU screen, you may have to...

find / -name <filename>

If you get a lot of permission denied errors then run the command as root.

Try using
sed -e "#$param_name#s#$current_value#$target_value#" abc.txt >> output.txt
and see if that works.

If you're in vi, just press the ` key. If you're talking about printing it to the screen with echo, try escaping it like this:
echo "\`"

Are you asking how to get your name written in ASCII art when you login? Try a program called figlet. You'll most likely have to download and compile it. To run it just do 'figlet <yourname>'. You...

Would it be possible to just set the variables within the script? I know that's not ideal but it may be a work-around.

In general 'sudo' in a cron script is a bad idea. Also, in your scripts are you using the full path/command? You should do that. Are you cable to just install the job under root?

With external drives it's very possible that the drive itself is ok but the enclosure circuitry is going bad. Either way, your best bet at recovering the data is to try to pull the drive out of the...

Are there any other logical drives on this controller? Are you seeing any errors on them? If not then I kinda doubt it's a hardware issue.