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How to run cron job every 2 hours
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398
Just do:
0 */2 * * * /home/username/test.sh
The 0 at the beginning means to run at the 0t...
Cannot generate iOS App archive in xcode
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317
Check Build Settings:
Skip install is NO for the main project target
Skip install is YES for...
How to set up a PostgreSQL database in Django
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edited May 3 '17 at 13:00
community wiki
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Best way to store date/time in mongodb
...st.find()
{ "_id" : ObjectId("..."), "date" : ISODate("2014-02-10T10:50:42.389Z") }
{ "_id" : ObjectId("..."), "date" : ISODate("2014-02-10T10:50:57.240Z") }
The native type supports a whole range of useful methods out of the box, which you can use in your map-reduce jobs, for example.
If you nee...
What is the purpose of the -nodes argument in openssl?
...t the private key, you can omit -nodes and your key will be encrypted with 3DES-CBC. To encrypt the key, OpenSSL prompts you for a password and it uses that password to generate an encryption key using the key-derivation function EVP_BytesToKey.
Depending on your version of OpenSSL and compiled op...
Get city name using geolocation
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Alex
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answered Jul 23 '11 at 3:15
MichalMichal
12.1k33 gold badge...
Foreign Key to multiple tables
I've got 3 relevant tables in my database.
5 Answers
5
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Extract a regular expression match
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answered Feb 3 '10 at 14:46
hadleyhadley
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How do I convert a Ruby class name to a underscore-delimited symbol?
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143
Rails comes with a method called underscore that will allow you to transform CamelCased strings ...
What is pseudopolynomial time? How does it differ from polynomial time?
...t input.
For example, if the input to a sorting algorithm is an array of 32-bit integers, then the size of the input would be 32n, where n is the number of entries in the array. In a graph with n nodes and m edges, the input might be specified as a list of all the nodes followed by a list of all t...