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How to hide command output in Bash
...hat looks like this:
your_command "Is anybody listening?" >&-
Usually, output goes either to file descriptor 1 (stdout) or 2 (stderr). If you close a file descriptor, you'll have to do so for every numbered descriptor, as &> (below) is a special BASH syntax incompatible with >&am...
Fast way of finding lines in one file that are not in another?
...ind lines common to both files
comm -12 file1 file2
The man file is actually quite readable for this.
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How do I limit task tags to current project in Eclipse?
Eclipse currently shows the task tags ( // TODO ) from all open projects. I would be grateful if anyone could point out the preference, where I could restrict the scope of tasks displayed (e.g. only tasks from current project).
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How to append something to an array?
...the push() function to append more than one value to an array in a single call:
// initialize array
var arr = ["Hi", "Hello", "Bonjour", "Hola"];
// append multiple values to the array
arr.push("Salut", "Hey");
// display all values
for (var i = 0; i < arr.length; i++) {
console.log(arr[i...
How do you remove a Cookie in a Java Servlet
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I tried setMaxAge(0) initially in firefox but I still saw it listed in my cookies as "Expires: at end of session" and thought my servlet was still receiving that expired cookie. It might've been a combo of needing to set the response.setContentType(...
HTML5 record audio to file
...ailable at: http://webaudiodemos.appspot.com/AudioRecorder/index.html
It allows you to record audio in the browser, then gives you the option to export and download what you've recorded.
You can view the source of that page to find links to the javascript, but to summarize, there's a Recorder obj...
Transaction isolation levels relation with locks on table
...B just executes a SELECT statement to read data. C reads and updates data. All these process work on the same table T.
READ UNCOMMITTED - no lock on the table. You can read data in the table while writing on it. This means A writes data (uncommitted) and B can read this uncommitted data and use it...
How to duplicate a git repository? (without forking)
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@Thomas I just did this and yes, it preserved all of my history in the copy. Note that after you push and cd into the new repo, there's still nothing there because you've pushed to the remote, so you need to do a pull
– PfunnyGuy
Oc...
Set initial focus in an Android application
In my Android application it automatically focuses the first Button I have in my layout, giving it an orange outline. How can I set the initial focus preferably in XML, and can this be set to nothing?
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Get value from JToken that may not exist (best practices)
... @PaulHazen, it's not that bad... You just reinvented the wheel a bit is all.
– devinbost
Dec 22 '16 at 20:32
This d...