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More elegant “ps aux | grep -v grep”
When I check list of processes and 'grep' out those that are interesting for me, the grep itself is also included in the results. For example, to list terminals:
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How to sort with lambda in Python
In Python, I am trying to sort by date with lambda. I can't understand my error message. The message is:
4 Answers
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Copy all files with a certain extension from all subdirectories
Under unix, I want to copy all files with a certain extension (all excel files) from all subdirectories to another directory. I have the following command:
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Setting default permissions for newly created files and sub-directories under a directory in Linux?
I have a bunch of long-running scripts and applications that are storing output results in a directory shared amongst a few users. I would like a way to make sure that every file and directory created under this shared directory automatically had u=rwxg=rwxo=r permissions.
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Freely convert between List and IEnumerable
How can I convert a List<MyObject> to an IEnumerable<MyObject> and then back again?
6 Answers
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Declaring an enum within a class
In the following code snippet, the Color enum is declared within the Car class in order to limit the scope of the enum and to try not to "pollute" the global namespace.
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What is the difference between `raise “foo”` and `raise Exception.new(“foo”)`?
What is the difference - technical, philosophical, conceptual, or otherwise - between
2 Answers
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RegEx to make sure that the string contains at least one lower case char, upper case char, digit and
What is the regex to make sure that a given string contains at least one character from each of the following categories.
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What exactly does stringstream do?
I am trying to learn C++ since yesterday and I am using this document: http://www.cplusplus.com/files/tutorial.pdf (page 32) . I found a code in the document and I ran it. I tried inputting Rs 5.5 for price and an integer for quantity and the output was 0.
I tried inputting 5.5 and 6 and the output...