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How do I create a crontab through a script

I need to add a cron job thru a script I run to set up a server. I am currently using Ubuntu. I can use crontab -e but that will open an editor to edit the current crontab. I want to do this programmatically. ...
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What is the difference between linear regression and logistic regression?

When we have to predict the value of a categorical (or discrete) outcome we use logistic regression . I believe we use linear regression to also predict the value of an outcome given the input values. ...
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Get all unique values in a JavaScript array (remove duplicates)

I have an array of numbers that I need to make sure are unique. I found the code snippet below on the internet and it works great until the array has a zero in it. I found this other script here on Stack Overflow that looks almost exactly like it, but it doesn't fail. ...
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How do you make a deep copy of an object?

It's a bit difficult to implement a deep object copy function. What steps you take to ensure the original object and the cloned one share no reference? ...
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How to store a command in a variable in a shell script?

I would like to store a command to use at a later period in a variable (not the output of the command, but the command itself) ...
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Non-static variable cannot be referenced from a static context

... 12 Answers 12 Active ...
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What are the recommendations for html tag?

I've never seen <base> HTML tag actually used anywhere before. Are there pitfalls to its use that means I should avoid it? ...
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Check if something is (not) in a list in Python

I have a list of tuples in Python , and I have a conditional where I want to take the branch ONLY if the tuple is not in the list (if it is in the list, then I don't want to take the if branch) ...
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C++11 emplace_back on vector?

Consider the following program: 8 Answers 8 ...
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How are strings passed in .NET?

When I pass a string to a function, is a pointer to the string's contents passed, or is the entire string passed to the function on the stack like a struct would be? ...