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Can't update Macports (with Mac OS X Mavericks)

... Install the "Command Line Tools" first: sudo xcode-select --install (Explicitly agreeing to the license is sometimes necessary via "sudo xcodebuild -license") Then upgrade the ports: sudo port -v selfupdate ...
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MySQLDump one INSERT statement for each data row

...tings. See the discussion of mysqldump option groups for information about selectively enabling or disabling a subset of the options affected by --opt. --skip-extended-insert Turn off extended-insert share | ...
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How to avoid “Permission denied” when using pip with virtualenv

... Solution: If you created the virtualenv as root, run the following command: sudo chown -R your_username:your_username path/to/virtuaelenv/ This will probably fix your problem. Cheers share...
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How to create a trie in Python

...; _end = '_end_' >>> >>> def make_trie(*words): ... root = dict() ... for word in words: ... current_dict = root ... for letter in word: ... current_dict = current_dict.setdefault(letter, {}) ... current_dict[_end] = _end ... return ...
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What is the point of interfaces in PHP?

...ce IPersonService { public function Create($personObject); } class MySqlPerson implements IPersonService { public function Create($personObject) { // Create a new person in MySql database. } } class MongoPerson implements IPersonService { public function Create($pers...
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git clone through ssh

...bly specific commands. Instead of saying <your folder>, I will say /root/git. The only place where I am changing the original command is replacing my specific server name with example.com. I will explain the folders purpose is so you can adjust it accordingly. Please let me know of any con...
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How many bytes does one Unicode character take?

...fer UTF-16 over UTF-8, for instance. Developers of different software may select different encodings based upon which Unicode characters are more likely to be used. In China/Japan for instance, UTF-16 (2-bytes) makes more sense than UTF-8 for them, because the same characters often would need twice...
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Git alias with positional parameters

...ou use stronger magic like this. UPD Because commands are executed at the root of repository you may use ${GIT_PREFIX} variable when referring to the file names in commands share | improve this ans...
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How to check if a float value is a whole number

I am trying to find the largest cube root that is a whole number, that is less than 12,000. 13 Answers ...
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How to run a shell script at startup

... there is no rc.d directory in my root's etc folder.. this has me dumbfounded isn't this a crucial directory Linux needs to start up? It's just missing an my OS seems to run fine. Do I have to create it? I see a bunch of similarly named files like "rc1.d" all...