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a ha, I see, thanx for clearify that, I have another little be query,
how about the case, 11111111.11111111.11111111.11010100, so the rule for that is wether we count from the first left most 0 bit...

Hi, thanx, Perderabo! your comment are really helpful for me!
oh, just one more query which I am a little be confused, for

Why the host number can range from 0 to 15, could you be kind to...

thanx, by the way, what the rule for find out the network address and broadcast address, if in this case, the IP address is class A, is it the 10.0.0.0 for network address, and 10.0.0.255 for...

say I have a IP address which is 10.0.0.12, and subnet mask is 255.255.255.240, what is the network address and what is the broadcast address which host lives on?
And could you explain how to get...

I have a problem, why should root access only be provided from a login on the console, and why should a user be forced to use "su" command to perform system maintenance, rather than logging in?

Thanx for help!;)

what does following sed do to their input:


s,#\(.\*)$,/*\1*/,

Thanx, and by the way any meterial to have a look for sed tutorial?

Hi, butterfm.
Your tips is very helpful for me, now, I have solve the problem, and I would spend some time to understand awk, that is pretty useful. and again, thanx for your help, man.;)

;)
Hi, thanx very much, butterfm and perdo! Your suggestions are extremelly useful, now I can display the total number of byte like something below:

total_byte()
{
awk '{print $10}'...

Hi, Actually, that is a question from my study, but I just ask for a point which I can not handle, I never ask somebody to do my whole job!:o
What I do so far, I need to sort a range of log file,...

:confused:
I have plain text file "tmp" which include a range of numbers(bytes), say like:

123
234
567
2434
2323
213123
How can I add them and display out.
should I use AWK, then how?
I...

yes, please help me!:(

I still doesn't know any command to allow me the exclude the .jpg, .gif file from the whole log list. any body knows

Hi, I'm a newer for this languages, and I have a log file, which is something like this:

35.75.253.207 - - [17/Aug/2003:12:42:37 +1000] "GET /products/orgonizer/title.png HTTP/1.1" 200 1555 "-"...