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How To Set Up GUI On Amazon EC2 Ubuntu server
...it.d/ssh restart
Setting up ui based ubuntu machine on AWS.
In security group open port 5901. Then ssh to the server instance. Run following commands to install ui and vnc server:
sudo apt-get update
sudo apt-get install ubuntu-desktop
sudo apt-get install vnc4server
Then run following command...
When is it right for a constructor to throw an exception?
...o a usable state. There are basically two schools of thought on this.
One group favors two-stage construction. The constructor merely brings the object into a sleeper state in which it refuses to do any work. There's an additional function that does the actual initialization.
I've never understood...
MySQL error: key specification without a key length
...t frequent last names:
select count(*) as cnt, last_name
from employees
group by employees.last_name
order by cnt
+-----+-------------+
| cnt | last_name |
+-----+-------------+
| 226 | Baba |
| 223 | Coorg |
| 223 | Gelosh |
| 222 | Farris |
| 222 | Sudbeck |
| 221...
Understanding MongoDB BSON Document size limit
...ig data, not have such limitations. In my project, I need to aggregate and group tweets that are related to the same trending topic, and this might end up in more than 20000 tweets for a time period of 20 hours (and it's quite possible that there will be trends durating more than 20 hours in my db)....
What is the entry point of swift code execution?
...n Cocoa and Cocoa Touch applications main.swift is in the Supporting Files group, and is simply configured to call NSApplicationMain.
– nathan
Jun 8 '14 at 11:39
...
How do I force Postgres to use a particular index?
....
Your planner settings might be causing problems.
See also this old newsgroup post.
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How do ACID and database transactions work?
...tions are a mechanism for guaranteeing these properties; they are a way of grouping related actions together such that as a whole, a group of operations can be atomic, produce consistent results, be isolated from other operations, and be durably recorded.
...
Is double square brackets [[ ]] preferable over single square brackets [ ] in Bash?
...ity to bash 3.1 is not enabled (like with BASH_COMPAT=3.1)
⁵ though the grouping (here with the {...;} command group instead of (...) which would run an unnecessary subshell) is not necessary as the || and && shell operators (as opposed to the || and && [[...]] operators or the -o...
Npm install failed with “cannot run in wd”
...anging the default user config. So I did npm set user my_user and npm set group my_group, which adds the corresponding entries in the root user's .npmrc file. But the problem is that the node_modules folder itself and its subfolders are still owned by root, so that doesn't help. I couldn't figure...
String.replaceAll single backslashes with double backslashes
...n, allows us to use portion of data matched by regex and held by capturing group indexed as x, like "012".replaceAll("(\\d)", "$1$1") will match each digit, place it in capturing group 1 and $1$1 will replace it with its two copies (it will duplicate it) resulting in "001122".
So again, to let repl...