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Verify a certificate chain using openssl verify
... on OS X with openssl from homebrew use: openssl verify -CAfile /usr/local/etc/openssl/cert.pem -untrusted Intermediate.pem UserCert.pem
– Greg Dubicki
Mar 22 '17 at 13:35
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Comparison of JSON Parser for Objective-C (JSON Framework, YAJL, TouchJSON, etc)
As far as I know, there are three JSON Parsers for Objective-C, JSON Framework , YAJL , and Touch JSON . Then, These three would have their own characteristics.
For example:
YAJL can be used as a SAX style parser.
JSON Framework has relatively long history and is widely used.
Touch JSO...
Separation of business logic and data access in django
...ation e-mail is sent to the user
and an entry is added to the system log
(etc. etc.)
Such scenario's are useful to see how different parts of your infrastructure can be affected by a single command – in this case your database (some kind of 'active' flag), your mail server, your system log, etc...
How to set Oracle's Java as the default Java in Ubuntu?
...nvironment variables globally and at system level means use should set in /etc/environment file.
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Software Design vs. Software Architecture [closed]
...gn patterns, there are architectural patterns: MVC, 3-tier layered design, etc.
Software design is about designing the individual modules / components. What are the responsibilities, functions, of module x? Of class Y? What can it do, and what not? What design patterns can be used?
So in short, S...
How can I programmatically create a new cron job?
...
The best way if you're running as root, is to drop a file into /etc/cron.d
if you use a package manager to package your software, you can simply lay down files in that directory and they are interpreted as if they were crontabs, but with an extra field for the username, e.g.:
Filename: ...
What is difference between monolithic and micro kernel?
...t and some popular Linux distros have a Hurd port (Debian/Hurd, Arch Hurd, etc).
– beatgammit
Feb 2 '13 at 3:18
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R data formats: RData, Rda, Rds etc
...Rda is just a short name for RData. You can just save(), load(), attach(), etc. just like you do with RData.
Rds stores a single R object. Yet, beyond that simple explanation, there are several differences from a "standard" storage. Probably this R-manual Link to readRDS() function clarifies such d...
How do you detect Credit card type based on number?
..._brand;
}
Here you can play with it:
http://jsfiddle.net/upN3L/69/
For PHP use this function, this detects some sub VISA/MC cards too:
/**
* Obtain a brand constant from a PAN
*
* @param string $pan Credit card number
* @param bool $include_sub_types Include detection of...
How can I call controller/view helper methods from the console in Ruby on Rails?
... # get you the HTML
> response.cookies # hash of the cookies
# etc, etc
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