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comment I can't loign as postgres user
What exactly are you trying to do, and what exactly is it that you are seeking to learn? Stack Exchange and Super User works best when questions are clear and allow for speciifc answers that can be judged objectively. Consider taking the site tour to learn how we do things here.
1d
revised Reversed " and @ keys Lenovo T430
No need for a signature tagline, your post is already linked to your profile; see http://superuser.com/help/behavior
2d
comment Can a massive MySQL data import on an SSD damage it?
Sectors are traditionally 1 KiB? Citation, please. On rotational drives, two sector sizes are common: 512 bytes (traditional, like on my 4 TB HDDs, in IBM-compatibles dates back to around 1981 or so) and 4096 bytes ("Advanced Format"). File system level allocation units can vary in size, but that's a completely different matter and is purely a file system construct to keep the data structures tracking allocation to a reasonable size in file systems that don't grow them dynamically on an as-needed basis; besides, I doubt fixed 1 KiB block sizes are very common in practice.
2d
comment Can a massive MySQL data import on an SSD damage it?
"If not, then expect a failure eventually anyway." If the server does use redundant disks, still definitely expect a failure at some point, and plan for it. It's just that with redundancy in place, a single storage device failure has a much lower probability of leading to system downtime.
Apr
24
comment What other IP addresses can/should I use for my home network?
If you want to discuss this further, please ask a separate question about it so that it can be answered properly.
Apr
24
comment What other IP addresses can/should I use for my home network?
@barlop A smaller-than-/24 is the common globally-routable assignment for leaf sites these days. 10+ years ago I administered two separate IPv4 networks which had been assigned globally routable IPv4 addresses, one /27 and one /28 (same ISP, same customer, different sites). The public netblock at my current workplace is similar; I don't recall exactly, but I think it's a /28. Your initial comment said that "dot 0 is the network address, and dot 255 the broadcast", which holds if and only if the netmask is /24. For any other case, the statement is either (a) misleading or (b) outright false.
Apr
24
revised How to disable weird scrolling change in Windows 8.1 Explorer
Incorporate image
Apr
24
comment Lan printing issue HP 8600 pro
When this happens, are you able to surf the Internet from the PCs in question? What happens if you try to ping the printer's IP address?
Apr
24
comment What other IP addresses can/should I use for my home network?
You've got the subnet mask lengths backwards. /8 gives you 24 bits host. You want /24 which gives you 8 bits host (32 total minus 8 and 24 for network, respectively). 192.168/16 is RFC 1918 space, anything less (longer subnet mask) which fully fits within that range is thus also 1918 space.
Apr
24
comment What other IP addresses can/should I use for my home network?
Note: the "private networks" above refers to private residential networks. (Grace period ran out and I'd rather not delete the comment now.) Corporate networks may very well require a shorter netmask to accomodate all the hosts that need to be on a given subnet.
Apr
24
comment What other IP addresses can/should I use for my home network?
If 10.0.0/24 traffic is going to Brazil, your ISP is doing something very weird, and you should call them out on it. Except with special arrangements between the parties involved, 10/8 (like the other RFC 1918 ranges) is supposed to never make it past the egress router of a network.
Apr
24
comment What other IP addresses can/should I use for my home network?
@barlop Addresses ending in .0 and .255 do not indicate the network and broadcast addresses respectively, except in the very specific case where the IPv4 subnetwork ("subnet") mask is exactly 24 bits long. 24-bit netmask length (netmask 255.255.255.0) is a common setup for private networks, but it is not necessary and in fact "classful" IP address assignment has been deprecated since the mid-1990s. These days all IPv4 assignments are CIDR.
Apr
24
reviewed Reject What other IP addresses can/should I use for my home network?
Apr
23
comment Why does emptying disk space speed up computers?
@JasonC I/O performance in terms of sequential throughput is almost never a concern in practice; even a slow 4900 rpm drive will be plenty fast enough for almost any individual user. I/O performance in terms of read/write operations per second is going to be what kills performance in the majority of cases; ask your local favorite sysadmin about rotational-storage IOPS in multiuser systems some time, if you are so inclined. That's the big reason why practically nobody is deploying rotational storage for multiuser systems these days; you can just never even approach the IOPS of SSDs.
Apr
23
comment Why does emptying disk space speed up computers?
In addition to Jason's comment above, I want to point out the obvious: this answer relates to sorting (defragmenting), but does not explain why accessing a specific, random tile (say, the "3" tile) would be faster in the second case than in the first case.
Apr
21
comment Launching programs with GUI without display manager
It might be worth mentioning that "running them normally" will most likely involve backgrounding the process, so you'd most likely want to use xterm & to get an additional terminal, not just xterm. Etc.
Apr
17
comment How can I deactivate bad RAM regions on a Macbook Pro (Retina 13")?
You're doing fine for a new user so far. The question is quite okay. (Generally speaking, if you are having trouble putting into English words what you want, then focus on being specific and worry less about grammar and word choice. Not to say those are unimportant, but those are fixable.) Now that you have enough reputation to participate on meta, if you have any questions about how the site itself works or what is on-topic, then post those over on Meta Super User and we'll most likely be happy to help you out.
Apr
17
comment msgbox doesn't display current value
@Karan I take it OP wants both Newentry and ActiveCell.Value to hold the result of the InputBox() call at the end of the day. What I propose would accomplish that. If the OP wants something else, then adjustments are obviously needed (hence the "or in whichever order you prefer, ...").
Apr
17
comment msgbox doesn't display current value
I don't think VBA allows multiple assignments in a single statement (some other languages, particularly those which derive their syntax from C, do allow what you are proposing). You can however certainly first do Newentry = InputBox(...) and then ActiveCell.Value = Newentry (or in whichever order you prefer, depending on the exact behavior that you want).
Apr
17
comment Mouse cursor scaling issues in Xubuntu 14.04 with XFCE 4.10
For these purposes, generally, Ubuntu and Xubuntu are the same thing. The difference is mainly the window manager that is selected by default (Xubuntu uses Xfce as default, hence the X in the name).