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Aug
15
suggested approved edit on Check users currently logged in on the remote system with Nagios
Jul
21
awarded  Nice Answer
Jul
15
comment Is it possible that just one bit switches so my file shows me a letter “Q” instead of a “S”
@psusi Not impossible, as you just need enough bit-flips in the sector to make the ECC come out right. Unlikely, but possible, and disk manufacturers quote high enough error rates that you really ought to expect to see some. I've heard rumors that ZFS folks see them (due to ZFS-level data checksums)...
May
22
awarded  Notable Question
May
13
awarded  Caucus
Apr
30
awarded  Yearling
Feb
4
awarded  Popular Question
Jan
18
comment Making SD card corruption-proof
See unix.stackexchange.com/questions/26516/…
Dec
3
comment Do wifi packets go directly node to node?
If you can switch from 2.4 to 5.x GHz, that'll help greatly with noise. There is a lot less noise on the 5GHz bands (because its less common, and also because its better blocked by walls). Of course, its better blocked by walls, so you may have signal strength issues, depending.
Nov
21
comment How do I make Linux recognize a new SATA /dev/sda drive I hot swapped in without rebooting?
acpiphp is for PCI hotplug, i.e., hot adding and removing PCI cards. Some expensive systems support this. And also many hypervisors.
Oct
22
comment OpenVPN performance: how many concurrent clients are possible?
BTW, there isn't any reason you can't lower the rekeying interval (there is a security tradeoff, in that a key being compromised will reveal plaintext back to the last rekeying). Also, I'd be much more worried about the routing or other connection-look-up failing first. I mean, if OpenVPN is intended to have <100 connections active, what's the chance there there is an O(n) lookup of a connection somewhere?
Aug
14
comment How to stop people from using my domain to send spam?
Please go ahead and edit your post to correct it… that's one of the many encouraged reasons to use the edit link.
Aug
13
comment How to stop people from using my domain to send spam?
No, it relies on the SMTP "envelope" sender (and recipients, too) (the ones sent in the MAIL FROM command), which can be completely different than the From: header.
Jun
21
awarded  Talkative
Jun
20
awarded  Popular Question
Jun
8
accepted Making SATA disk write cache safe
Apr
30
awarded  Yearling
Jan
30
comment Anybody tried to use graphic card as a precision clock on a Windows server?
I hope you mean NTP, not NNTP. Doing time sync over NNTP would be, I dare say, a sign of insanity.
Jan
10
comment Recover RAID 5 data after created new array instead of re-using
FYI: for a while, its been possible to have partitioned md arrays. Originally, they had their own mdp devices, but as of Linux 2.6.28, all md arrays are partitionable. The mdadm manpage has some details. So the OP may need to reconstruct a partition table as well...
Dec
26
comment How do I append a specific number of null bytes to a file?
Its much faster because it'll generate a sparse file, which is what you want most of the time—but if you don't want a sparse file, the dd approach will work.