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Accessing bash command line args $@ vs $*

In many SO questions and bash tutorials I see that I can access command line args in bash scripts in two ways: 5 Answers ...
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How can I tell if my server is serving GZipped content?

I have a webapp on a NGinx server. I set gzip on in the conf file and now I'm trying to see if it works. YSlow says it's not, but 5 out of 6 websites that do the test say it is. How can I get a definite answer on this and why is there a difference in the results? ...
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Is there any way to git checkout previous branch?

... sort of want the equivalent of cd - for git. If I am in branch master and I checkout foo , I would love to be able to type something like git checkout - to go back to master , and be able to type it again to return to foo . ...
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Copy files without overwrite

I just can't seem to find a way on the command line to say "copy all the files from directory A to directory B, but if the file already exists in directory B, don't overwrite it, no matter which file is newer, and don't prompt me." ...
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C++ STL Vectors: Get iterator from index?

...sert(pos, first, last) is the function I want... except I only have first and last as ints. Is there any nice way I can get an iterator to these values? ...
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Is there a print_r or var_dump equivalent in Ruby / Ruby on Rails?

...to dump the structure of an object, similar to the PHP functions print_r and var_dump for debugging reasons. 10 Answers...
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Laravel: Get base url

...r seems quite hard to come by. In Codeigniter, I could load the url helper and then simply do 17 Answers ...
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Tips for debugging .htaccess rewrite rules

Many posters have problems debugging their RewriteRule and RewriteCond statements within their .htaccess files. Most of these are using a shared hosting service and therefore don't have access to the root server configuration. They cannot avoid using .htaccess files for rewriting and cannot e...
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Lazy Method for Reading Big File in Python?

I have a very big file 4GB and when I try to read it my computer hangs. So I want to read it piece by piece and after processing each piece store the processed piece into another file and read next piece. ...
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C++ performance challenge: integer to std::string conversion

...e very fast, can take 100 clockticks when linking CRT as a static library, and as much as 300 clockticks when linking as a DLL. For the same reason, returning by reference is better because it avoids an assignment, a constructor and a destructor. ...