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Verify a certificate chain using openssl verify

...the comments, this command implicitly trusts Intermediate.pem. I recommend reading the first part of the post Greg references (the second part is specifically about pyOpenSSL and not relevant to this question). In case the post goes away I'll quote the important paragraphs: Unfortunately, an "i...
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Unfortunately MyApp has stopped. How can I solve this?

... This answer describes the process of retrieving the stack trace. Already have the stack trace? Read up on stack traces in "What is a stack trace, and how can I use it to debug my application errors?" The Problem Your application quit because an uncaught RuntimeException was thrown. The mos...
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select * vs select column

.../O Pages (in SQL Server for e.g., each Page is 8 kilobytes). And every I/O read or write is by Page.. I.e., every write or read is a complete Page of data. Because of this underlying structural constraint, a consequence is that Each row of data in a database must always be on one and only one page...
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Android: Getting a file URI from a content URI?

... Actually, I just re-read the docs for getContentResolver().openInputStream(), and it works automatically for schemes of "content" or "file", so you don't need to check the scheme... if you can safely assume that it's always going to be content:/...
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mysqli_fetch_assoc() expects parameter / Call to a member function bind_param() errors. How to get t

...r (but that's a different story which is off topic for MySQLi, but you may read about it in the article linked above). What to do with the error message you get? First of all you have to locate the problem query. The error message contains the file name and the line number of the exact spot where ...
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Why use String.Format? [duplicate]

... I can see a number of reasons: Readability string s = string.Format("Hey, {0} it is the {1}st day of {2}. I feel {3}!", _name, _day, _month, _feeling); vs: string s = "Hey," + _name + " it is the " + _day + "st day of " + _month + ". I feel " + feeli...
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How to re-sync the Mysql DB if Master and slave have different database incase of Mysql replication?

...replication from scratch: At the master: RESET MASTER; FLUSH TABLES WITH READ LOCK; SHOW MASTER STATUS; And copy the values of the result of the last command somewhere. Without closing the connection to the client (because it would release the read lock) issue the command to get a dump of the m...
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How do I grab an INI value within a shell script?

... above, e.g. grep =), the same for other unexpected errors. If you need to read specific value under specific section, use grep -A, sed, awk or ex). E.g. source <(grep = <(grep -A5 '\[section-b\]' file.ini)) Note: Where -A5 is the number of rows to read in the section. Replace source with c...
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Installing SciPy with pip

...Package Index, which pip searches. easy_install scipy Searching for scipy Reading http://pypi.python.org/simple/scipy/ Reading http://www.scipy.org Reading http://sourceforge.net/project/showfiles.php?group_id=27747&package_id=19531 Reading http://new.scipy.org/Wiki/Download All is not lost, ...
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How can I parse a JSON file with PHP? [duplicate]

... I can't believe so many people are posting answers without reading the JSON properly. If you foreach iterate $json_a alone, you have an object of objects. Even if you pass in true as the second parameter, you have a two-dimensional array. If you're looping through the first dimensio...