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How to use double or single brackets, parentheses, curly braces
...nt for a top loader )
$ { date; make 2>&1; date; } | tee logfile
# now we can calculate the duration of a build from the logfile
There is a subtle syntactic difference with ( ), though (see bash reference) ; essentially, a semicolon ; after the last command within braces is a must, and th...
How does facebook, gmail send the real time notification?
...e number of requests, and how often you have to send them. You effectively now have an event framework that allows the server to 'fire' events.
Behind this, in terms of the actual content returned from those polls, it's a JSON response, with what appears to be a list of events, and info about them....
Spring @PostConstruct vs. init-method attribute
... can specify the method that needs to be called as initialization method.
Now with introduction of JSR 250 specs in Java EE and spring support of these annotations , dependency on spring framework has been reduced to a certain extent.
But i have to admit that addition of these things increase the ...
How to loop through array in jQuery?
...ink to docs)
Advantages: All of the same advantages as forEach, plus you know it's there since you're using jQuery.
Disadvantages: If you're using this in the containing code, you have to stick it in a variable so you can use it within the function, since this means something else within the funct...
Create new tmux session from inside a tmux session
... Wed Jan 13 11:31:38 2016) [204x54]
New session from within tmux
We are now inside or better known as attached to our target session. If we try to create a new session while attached it will result in a nesting error.
$ tmux new -s bar
> sessions should be nested with care, unset $TMUX to fo...
Build .so file from .c file using gcc command line
...
gcc -c -fPIC hello.c -o hello.o
This will generate an object file (.o), now you take it and create the .so file:
gcc hello.o -shared -o libhello.so
EDIT: Suggestions from the comments:
You can use
gcc -shared -o libhello.so -fPIC hello.c
to do it in one step. – Jonathan Leffler
I also s...
n-grams in python, four, five, six grams?
...k a whole document such as txt ? I am not familiar with Python so I don't know if it can open up a txt file and then use the N-gram analysis to check through ?
– maoyi
Apr 28 '16 at 20:21
...
Unstage a deleted file in git
... bit more flexibly? Probably. Why wasn't it? Probably only the developers know for sure.
– twalberg
Nov 13 '17 at 15:08
3
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Remote Connections Mysql Ubuntu
...t it
Then, Restart the Ubuntu MysQL Server
systemctl restart mysql.service
Now Ubuntu Server will allow remote access to the MySQL Server, But still you need to configure MySQL users to allow access from any host.
User must be 'username'@'%' with all the required grants
To make sure that, MySQL serv...
Sublime Text 2 keyboard shortcut to open file in specified browser (e.g. Chrome)
...er, paste this
[{ "keys": [ "f12" ], "command": "view_in_browser" }]
now F12 will be your shortcut key.
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