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1500 questions
121
votes
9 answers
How much network latency is "typical" for east - west coast USA?
At the moment we're trying to decide whether to move our datacenter from the west coast to the east coast.
However, I am seeing some disturbing latency numbers from my west coast location to the east coast. Here's a sample result, retrieving a small…
Jeff Atwood
- 13,264
120
votes
8 answers
How do I create a symbolic link in Windows?
Windows Vista added the ability to create symbolic links to files and directories. How do I create a symbolic link and what are the current consumer and server versions of Windows that support it?
cowgod
- 3,530
120
votes
5 answers
What's the difference between the single dash and double dash flags on shell commands?
I'm new to working in the shell and the usage of these commands seems arbitrary. Is there a reason one flag has a single dash and another might have a double dash?
kylex
- 1,463
120
votes
4 answers
Where does email sent to *@example.com go?
So I've wondered this for a long time.
Where does email sent to *@example.com go? If I accidentally sent sensitive information to *@example.com would some evil person (potentially at the IANA) be able to retrieve it someday?
bryan kennedy
- 1,801
120
votes
13 answers
Using wget to recursively download whole FTP directories
I want to copy all of the files and folders from one host to another.
The files on the old host sit at /var/www/html and I only have FTP access to that server, and I can't TAR all the files.
Regular connection to the old host through FTP brings me…
user9406
120
votes
7 answers
How to force nginx to resolve DNS (of a dynamic hostname) everytime when doing proxy_pass?
I am using nginx/0.7.68, running on CentOS, with the following configuration:
server {
listen 80;
server_name ***;
index index.html index.htm index.php default.html default.htm default.php;
location / {
root …
xiamx
- 1,392
120
votes
11 answers
Should I use tap or tun for openvpn?
What are the differences between using dev tap and dev tun for openvpn? I know the different modes cannot inter-operate. What is the technical differences, other then just layer 2 vs 3 operation. Are there different performance characteristics, or…
Thomaschaaf
- 3,122
119
votes
6 answers
Where can I find data stored by a Windows Service running as "Local System Account"?
I'm using a service which stores data on disk.
The service is running as "local system account".
Where is the stored data for that system user?
I'm thinking about C:\Documents and Settings\Default User but I'm not sure about that.
Can someone…
paulgreg
- 4,214
119
votes
1 answer
What is the purpose of the ".well-known"-folder?
If've found a new error message in our log files and would like to know, for what this .well_known folder is used for.
Which application/client would need to access such a folder and which application would create files inside it?
Here are some…
Sascha
- 1,314
119
votes
9 answers
How to run command as user who has /usr/sbin/nologin as Shell?
All I need to do is to run a specific script as a particular user who does have the nologin/false shell indicated in /etc/passwd.
I would run the script as root and this should run as another user.
Running:
~# su -c "/bin/touch /tmp/test"…
Tommaso
- 1,211
118
votes
3 answers
SFTP logging: is there a way?
I'm wondering if there is a way to log commands received by the server. It can be all SSH commands, as long as it includes information on commands related to file transfer.
I'm having issues with an SFTP client and the creator is asking for logs,…
Darryl Hein
- 1,802
118
votes
2 answers
How to do the port forwarding from one ip to another ip in same network?
I would like do some NAT in iptables. So that, all the packets coming to 192.168.12.87 and port 80 will be forwarded to 192.168.12.77 port 80.
How to do this with iptables?
Or
Any other ways to achieve the same?
sat
- 1,383
118
votes
2 answers
Why does the MySQL command line tool ignore the --port parameter?
This is what I'm doing:
mysql --host=localhost --port=9999 mysql -u root -p --execute="show tables;"
The command works (connecting to port 3306) no matter what I provide in --port argument. I have two mysql servers running on one machine, and want…
yegor256
- 1,866
117
votes
3 answers
What is the difference between service and systemctl?
Maybe this is a trivial question, but it is not totally clear to me. On one of our servers we have some background processes running which were started with service and some others which were started with systemctl, like this:
$ service nginx…
Aidas Bendoraitis
- 1,625
117
votes
3 answers
How long before an s3 bucket can be created with same name after deletion?
Title is quite explanatory, but I have just deleted an s3 bucket as it was in the wrong region and am wanting to recreate it in the correct region with same name as the just deleted one.
Is there any documentation of this or user experience?
ljs.dev
- 1,344
- 2
- 9
- 15