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awarded  Curious
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awarded  Popular Question
Jan
14
revised Why does my router stop giving out IP addresses
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Nov
15
comment IpTables -j REJECT to instantly block the loading on user browser
@emirjonb your approach fails for some reason. But there is a chance to find out why, which is: methodical troubleshooting. This is how you do it: compare the expected outcome with the actual outcome on every level. Wireshark is a great tool for doing that.
Nov
15
comment IpTables -j REJECT to instantly block the loading on user browser
First understand how ip, tcp, and iptables work. Then if you still want to use iptables, analyze this with wireshark.
Oct
15
comment find command locking the system out
Okay, but anyway, what makes you think, find somehow goes over the whole inode data? In what sense, anyway? After all it's the kernels job to do that, and it does it anyway, even when ls is successively readdir()-ing the directory. So honestly, it is not at all clear what "going through the inode metadata" even means.
Oct
15
comment find command locking the system out
Besides that, even a couple of Million bytes of inode processing barely explain a weeks worth of computation.
Oct
15
comment find command locking the system out
I don't think so. I've just skimmed over the gnu find and ls sources, and it basically does the same as ls does: opendir() followed by readdir() (see function xsavedir() in savedirinfo.c)
Oct
15
comment find command locking the system out
This still doesn't explain why find is slower than ls
Oct
14
revised Keep alive, ESTABLISHED and TIME_WAIT semantics
deleted 5 characters in body
Oct
14
revised Keep alive, ESTABLISHED and TIME_WAIT semantics
added 387 characters in body
Oct
14
answered Keep alive, ESTABLISHED and TIME_WAIT semantics
Oct
13
comment What kinds of Windows documentation for sysadmins are available?
@Daniel After stumbling over your comment again, I realized how shockingly oblivious I was of your hint about FindErr.net! It's the best answer I could hope for.
Oct
13
comment Setting up a preferred network interface in linux
There are two contradicting requirements here: 1.the linux box should automatically shut down the interface over which it connected to the windows laptop when the technician goes away. 2. if the technician's laptop is in the proximity, then it will connect automatically to the laptop's ad-hoc network. There is a single piece of hardware which can detect the technician's laptop's presence, the wireless card. It must stay enabled to perform this task.
Oct
13
comment Setting up a preferred network interface in linux
You don't have to configure one network as the preferred one, because you can use both networks simultaneously without any problems.
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