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Delete specific line number(s) from a text file using sed?
I want to delete one or more specific line numbers from a file. How would I do this using sed?
6 Answers
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Learning Regular Expressions [closed]
...ain them to me in an easy-to-follow manner? If there are any online tools or books, could you also link to them?
1 Answer
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How do I make a redirect in PHP?
...unction to send a new HTTP header, but this must be sent to the browser before any HTML or text (so before the <!DOCTYPE ...> declaration, for example).
header('Location: '.$newURL);
2. Important details
die() or exit()
header("Location: http://example.com/myOtherPage.php");
die();
Why you s...
How do I pass a unique_ptr argument to a constructor or a function?
...d I don't know very well how to handle unique_ptr parameters in constructors or functions. Consider this class referencing itself:
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Difference between single and double square brackets in Bash
...dition tests.
Double [[]] are an extension to the standard [] and are supported by bash and other shells (e.g. zsh, ksh). They support extra operations (as well as the standard posix operations). For example: || instead of -o and regex matching with =~. A fuller list of differences can be found in ...
Store print_r result into a variable as a string or text
If I use print_ r or var_dump it displays the result on the screen, but I want this data to be stored in a variable so that I can write it to a file.
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PHP - how to best determine if the current invocation is from CLI or web server?
...rmine whether the current invocation of PHP is from the command line (CLI) or from the web server (in my case, Apache with mod_php).
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What is Mocking?
...n mock in the dictionary you will find that one of the definitions of the word is something made as an imitation.
Mocking is primarily used in unit testing. An object under test may
have dependencies on other (complex) objects. To isolate the behavior
of the object you want to replace the other obj...
How to do a less than or equal to filter in Django queryset?
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Less than or equal:
User.objects.filter(userprofile__level__lte=0)
Greater than or equal:
User.objects.filter(userprofile__level__gte=0)
Likewise, lt for less than and gt for greater than. You can find them all in the documentati...
Regular Expressions- Match Anything
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Normally the dot matches any character except newlines.
So if .* isn't working, set the "dot matches newlines, too" option (or use (?s).*).
If you're using JavaScript, which doesn't have a "dotall" option, try [\s\S]*. Thi...