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How to write a cron that will run a script every day at midnight?
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from the man page
linux$ man -S 5 crontab
cron(8) examines cron entries once every minute.
The time and date fields are:
field allowed values
----- --------------
minu...
Show/Hide the console window of a C# console application
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Just go to the application's Properties and change the Output type from Console Application to Windows Application.
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What is the best JavaScript code to create an img element
...e above code, if the values weren't hard coded). It's also easier to read (from a JS perspective):
$('#container').append($('<img>', {
src : "/path/to/image.jpg",
width : 16,
height : 16,
alt : "Test Image",
title : "Test Image"
}));
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how to change any data type into a string in python
... use str(any_var) since it's more readable for human and allows to benefit from cases when any_var defines __repr__() but doesn't define __str__().
– Abgan
Oct 11 '16 at 15:22
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Command substitution: backticks or dollar sign / paren enclosed? [duplicate]
...hangeable, well, I'd say that, in general, they are interchangeable, apart from the exceptions you mentioned for escaped characters. However, I don't know and cannot say whether all modern shells and all modern *nixes support both forms. I doubt that they do, especially older shells/older *nixes. If...
How to add multiple objects to ManyToMany relationship at once in Django ?
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A short experiment from the shell shows that @sdolan is in fact (currently) incorrect. I.e. when I look at the generated SQL I see only a single insert statement: INSERT INTO app_one_twos (one_id, two_id) VALUES (1, 1), (1, 2), (1, 3), (1, 4)...
What are all the common ways to read a file in Ruby?
..., x }
or
File.foreach('testfile') {|x| print "GOT", x }
File inherits from IO, and foreach is in IO, so you can use either.
I have some benchmarks showing the impact of trying to read big files via read vs. line-by-line I/O at "Why is "slurping" a file not a good practice?".
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Python exit commands - why so many and when should each be used?
...ax and reserving another keyword. This is similar to why print was changed from a statement to a function. It's easy to add syntax, but there's a complexity cost in doing so.
– user2357112 supports Monica
Dec 7 '18 at 19:58
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How can I set the Sender's address in Jenkins?
I'm sending mail from Jenkins to an anonymous SMTP relay internally. That relay then securely sends mail to exchange online via TLS on port 587. The transport works perfectly, the issue is that Microsoft requires the Sender address match the authentication credentials login name which is the same as...
Java equivalent to C# extension methods
...n methods can make code much more elegant compared to extra static methods from some other class. Almost all more modern languages allow for some kind existing class extension: C#, php, objective-c, javascript. Java surely shows its age here. Imagine you want to write a JSONObject to disk. Do you ca...