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How to check if running as root in a bash script
I'm writing a script that requires root level permissions, and I want to make it so that if the script is not run as root, it simply echoes "Please run as root." and exits.
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Why is there no Constant feature in Java?
I was trying to identify the reason behind constants in Java
I have learned that Java allows us to declare constants by using final keyword.
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What's the difference between git clone --mirror and git clone --bare
The git clone help page has this to say about --mirror :
7 Answers
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Algorithm to return all combinations of k elements from n
I want to write a function that takes an array of letters as an argument and a number of those letters to select.
71 Answe...
Using grep to search for a string that has a dot in it
I am trying to search for a string 0.49 (with dot) using the command
9 Answers
9
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Objective-C: Reading a file line by line
What is the appropriate way of dealing with large text files in Objective-C? Let's say I need to read each line separately and want to treat each line as an NSString. What is the most efficient way of doing this?
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Is optimisation level -O3 dangerous in g++?
I have heard from various sources (though mostly from a colleague of mine), that compiling with an optimisation level of -O3 in g++ is somehow 'dangerous', and should be avoided in general unless proven to be necessary.
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How should you build your database from source control?
There has been some discussion on the SO community wiki about whether database objects should be version controlled. However, I haven't seen much discussion about the best-practices for creating a build-automation process for database objects.
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Why use the yield keyword, when I could just use an ordinary IEnumerable?
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8 Answers
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open() in Python does not create a file if it doesn't exist
What is the best way to open a file as read/write if it exists, or if it does not, then create it and open it as read/write? From what I read, file = open('myfile.dat', 'rw') should do this, right?
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