Questions[replace](server)

I have a file that has a single line with a lot of ! characters. I want to remove all of the ! characters.

I tried this:

sed s/!// myfile

and this:

sed 's/!//' myfile

and this:

sed 's/"\!*"//' myfile

But they all just print out all of the "!".

I must be missing something obvious. Any ideas?

We have a 16-drive RAID-6 that has three problem drives. Two are already dead, and the third is giving SMART warnings. (Nevermind how it got in such a bad state.)

Obviously we want to replace the dead drives before the one that is still working, but is it better to:

1. replace one dead drive, let the RAID rebuild, then replace the other, and let it rebuild again; or

2. replace both drives at once and let it rebuild both in parallel?

To put it another way, will we get back to a state of redundancy faster by reintroducing one drive or two? Does rebuilding two drives in parallel slow the rebuild process?

In case it matters, the controller is a 3ware 9650SE-16ML.

One of the drives failed in my server configured with RAID 5, and I can't find a exact replacement. From my understanding, RAID 5 supports drives with different sizes. Is this safe? Any recommendations, like choosing the same manufacturer or something like that?

RAID 5 in my server is provided by a LSI controller.

How can I use search and replace to change the contents of a file.

I need to be able to change the 'all to none' and/or 'none to all' without having to manually do it every time for hundreds of lines.

below is a sample text file with lines numbers on the right. I know how to open and close the file for writing already.

Lines

1 define_filter absolute_minimal_filter ------- all
2 define_filter atma_basic_filter -------- ----- none
3 define_filter atma_communication_filter -- all
4 define_filter atma_health_filter ------------- none
5 define_filter atma_misc_filter --------------- all
6 define_filter atma_performance_filter ---- none
7 define_filter atma_supplemental_filter ---- none

I have a pair of Windows 2000 domain controllers. The machine that currently hosts GC is getting tired and is pretty old as far as hardware. I want to replace it with a newer machine I have lying around. Ideally I want to keep the same name and IP address though that is not neccessarily critical. Furthermore I have a license for 2003 server that is not in use so the new machine will run 2003 server. Any advice on the basic step by step?