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Correct way to detach from a container without stopping it
...t comes down to the following when the container was launched:
was a TTY allocated (-t)
was stdin left open (-i)
^P^Q does work, BUT only when -t and -i is used to launch the container:
[berto@g6]$ docker run -ti -d --name test python:3.6 /bin/bash -c 'while [ 1 ]; do sleep 30; done;'
b26e39632...
Why do you need to put #!/bin/bash at the beginning of a script file?
...sh, the "Bourne Again Shell"), scripts can be in bash, python, perl, ruby, PHP, etc, etc. For example, you might see #!/bin/perl or #!/bin/perl5.
PS:
The exclamation mark (!) is affectionately called "bang". The shell comment symbol (#) is sometimes called "hash".
PPS:
Remember - under *nix, ass...
Why does .NET foreach loop throw NullRefException when collection is null?
... either return an empty collection — it is a call to constructor, memory allocation, and perhaps a bunch of a code to be executed. Either you could just return «null» → obviously there's only a code to return and a very short code to check is the argument is «null». It's just a performance.
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Best practices to test protected methods with PHPUnit
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If you're using PHP5 (>= 5.3.2) with PHPUnit, you can test your private and protected methods by using reflection to set them to be public prior to running your tests:
protected static function getMethod($name) {
$class = new Reflectio...
Base64 length calculation?
...ss the point of the original question, which is how much space needs to be allocated to fit the base64 encoding for a given binary string of length n bytes.
The answer is (floor(n / 3) + 1) * 4 + 1
This includes padding and a terminating null character. You may not need the floor call if you are ...
What's the Android ADB shell “dumpsys” tool and what are its benefits?
...ther total
size: 2868 5767 N/A 8635
allocated: 2861 2891 N/A 5752
free: 6 2876 N/A 2882
(Pss): 532 80 2479 3091
(shared dirty): 932 2004 6060 8996
(priv dirty)...
How to link a Facebook app with an existing fan page
...ved from solutions mentioned below:
Solution 1
http://facebook.com/add.php?api_key=[YOUR_APP_KEY]&pages=1&page=[YOUR_PAGE_ID]
YOUR_APP_KEY You can get it from application settings, its App Id
YOUR_PAGE_ID You can get it through Graph Explorer https://graph.facebook.com/[PAGE_NAME]
So...
How to show particular image as thumbnail while implementing share on Facebook?
... this only seems to work for the newer api, not the old share.php link
– chrismarx
Apr 28 '11 at 18:01
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Servlet for serving static content
...ed it on Tomcat 7.0.55. They call it a directory climbing: owasp.org/index.php/Path_Traversal
– Cristian Arteaga
Aug 4 '18 at 0:37
1
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Rails migration for has_and_belongs_to_many join table
...he table gets really big then you may want to be able to save space by not allocating another id for each relationship.
– docwhat
Jun 5 '11 at 3:39
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