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Linux command (like cat) to read a specified quantity of characters
Is there a command like cat in linux which can return a specified quantity of characters from a file?
9 Answers
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Find out whether Chrome console is open
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requestAnimationFrame (Late 2019)
Leaving these previous answers here for historical context. Currently Muhammad Umer's approach works on Chrome 78, with the added advantage of detecting both close and open events.
function toS...
Insert the carriage return character in vim
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Type: ctrl-v ctrl-m
On Windows Use: ctrl-q ctrl-m
Ctrl-V tells vi that the next character typed should be inserted literally and ctrl-m is the keystroke for a carriage return.
share
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Starting python debugger automatically on error
This is a question I have wondered about for quite some time, yet I have never found a suitable solution. If I run a script and I come across, let's say an IndexError, python prints the line, location and quick description of the error and exits. Is it possible to automatically start pdb when an err...
Capturing touches on a subview outside the frame of its superview using hitTest:withEvent:
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This looks good and thanks for doing it. However, had one question: why are you doing return [super hitTest:point withEvent:event]; ? Wouldn't you just return nil if there is no subview that triggers the touch? Apple says hitTest returns nil if no subview contains the touch.
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Propagate all arguments in a bash shell script
...cond
Received: first
Received: second
Received:
Received:
$ ./foo.sh "one quoted arg"
Received: one
Received: quoted
Received: arg
Received:
$ ./bar.sh first second
Received: first
Received: second
Received:
Received:
$ ./bar.sh "one quoted arg"
Received: one quoted arg
Received:
Received:
Receiv...
Accessing Google Spreadsheets with C# using Google Data API
...s("jo@gmail.com", "mypassword");
Get a list of spreadsheets:
SpreadsheetQuery query = new SpreadsheetQuery();
SpreadsheetFeed feed = myService.Query(query);
Console.WriteLine("Your spreadsheets: ");
foreach (SpreadsheetEntry entry in feed.Entries)
{
Console.WriteLine(entry.Title.Text);
}
G...
Create PostgreSQL ROLE (user) if it doesn't exist
How do I write an SQL script to create a ROLE in PostgreSQL 9.1, but without raising an error if it already exists?
10 Answ...
Print All JVM Flags
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The best documentation I've found is the source.
I've used this SO Q&A to create a debug build. With this debug build, you can run java -XX:+AggressiveOpts -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+PrintFlagsFinal -XX:+PrintFlagsWithComments -version.
From the...
How to merge specific files from Git branches
...tent is in file.py from branch2 that is no longer applies to branch1, it requires picking some changes and leaving others. For full control do an interactive merge using the --patch switch:
$ git checkout --patch branch2 file.py
The interactive mode section in the man page for git-add(1) explains...