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How to use sed to remove the last n lines of a file
I want to remove some n lines from the end of a file. Can this be done using sed?
22 Answers
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how to fire event on file select
...d the same file again? This code will only execute once, the second time, selecting the same file will not execute a change event
– Christopher Thomas
Mar 13 '14 at 15:11
6
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creating a random number using MYSQL
I would like to know is there a way to select randomly generated number between 100 and 500 along with a select query.
6 A...
Comet implementation for ASP.NET? [closed]
...urrent clients mark, with messages delivered as high as 300,000 per second from a single node.
It includes client-side support for JavaScript, .NET/Mono, iOS, Mac OS X, Java, Silverlight, Windows Phone, Windows Runtime, and .NET Compact, with server-side support for .NET/Mono and PHP.
Clustering i...
How can I open a Shell inside a Vim Window?
...rminal – not everyone is using vim in a terminal emulator above a GUI… From Ctrl-whatever I suppose your answer assumes gnome-terminal or a similar emulator.
– törzsmókus
May 9 '19 at 12:30
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Making a WinForms TextBox behave like your browser's address bar
...etty straightforward and seems to work in all the scenarios (mousing down, selecting text, tabbing focus, etc.)
bool alreadyFocused;
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textBox1.GotFocus += textBox1_GotFocus;
textBox1.MouseUp += textBox1_MouseUp;
textBox1.Leave += textBox1_Leave;
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void textBox1_Leave(object sender, EventAr...
fatal error: malformed or corrupted AST file - Xcode
...olved the issue for me. In Xcode, go to Window->Organizer->Projects, select your project, and press the "Delete..." button next to "Derived data".
If this doesn't work, you can try to do a Product->Clean (Cmd+Shift+k).
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Laravel Eloquent groupBy() AND also return count of each group
...working for me:
$user_info = DB::table('usermetas')
->select('browser', DB::raw('count(*) as total'))
->groupBy('browser')
->get();
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Unknown file type MIME?
...own data. RFC-2046 defines only known types but RFC-7231 tells you how to handle unknown types.
– Sampo Sarrala - codidact.org
Feb 22 '15 at 17:31
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How do I use regex in a SQLite query?
...ite manager. You need to invoke it slightly differently though, like this: SELECT * FROM table WHERE column regexp("myregexp")
– Tristan
May 30 '14 at 17:16
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