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How to get the instance id from within an ec2 instance?
...ress
--public-ipv4 display the public ipv4 ip address
--block-device-mapping display the block device id
--security-groups display the security groups
--mac display the instance mac address
--profile display the instance profile
...
Difference between BeautifulSoup and Scrapy crawler?
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If you use beautifulsoup with blocking code, scrapy should be faster as long as there are independent requests to make, but I guess you can also use beautifulsoup with asyncio to achieve better performance.
– dyeray
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Stack, Static, and Heap in C++
...on for short lived and small data, that is needed only locally within some block:
if(some condition) {
int a[3]; // array a has automatic storage duration
fill_it(a);
print_it(a);
}
The lifetime ends as soon as we exit the block, and it starts as soon as the object is defined. They ar...
What are the mathematical/computational principles behind this game?
...0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10,
11, 12, 13, 14, 15, 16, 17, 18, 19, 20], blocks=[[0, 1, 2, 3, 20], [0,
4, 8, 12, 16], [0, 5, 10, 15, 19], [0, 6, 11, 13, 17], [0, 7, 9, 14,
18], [1, 4, 11, 14, 19], [1, 5, 9, 13, 16], [1, 6, 8, 15, 18], [1, 7,
10, 12, 17], [2, 4, 9, 15, 17], [2, 5, 11, 12, 18], [2, ...
Adding a new value to an existing ENUM Type
...ht get an error: ERROR: ALTER TYPE ... ADD cannot run inside a transaction block The solution is mentioned here (by Hubbitus): stackoverflow.com/a/41696273/1161370
– Mahesh
Oct 26 '17 at 19:24
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Generate sql insert script from excel worksheet
...ndy tool which saves a lot of time at
http://tools.perceptus.ca/text-wiz.php?ops=7
You just have to feed in the table name, field names and the data - tab separated and hit Go!
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Is it possible to add an HTML link in the body of a MAILTO link [duplicate]
... email client not to wrap the url.
e.g.
<http://www.example.com/foo.php?this=a&really=long&url=with&lots=and&lots=and&lots=of&prameters=on_it>
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How to read from standard input in the console?
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I'm not sure what's wrong with the block
reader := bufio.NewReader(os.Stdin)
fmt.Print("Enter text: ")
text, _ := reader.ReadString('\n')
fmt.Println(text)
As it works on my machine. However, for the next block you need a pointer to the variables you're as...
How do I rename all folders and files to lowercase on Linux?
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linux.icydog.net/rename.php: The renaming utility that comes by default with Ubuntu is a Perl program sometimes called prename
– sleepsort
May 8 '13 at 15:19
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Unit Testing bash scripts
...f the test harness for Perl but now has implementations in C, C++, Python, PHP, Perl, Java, JavaScript, and others.
bats-core
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