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How to redirect output to a file and stdout
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The command you want is named tee:
foo | tee output.file
For example, if you only care about stdout:
ls -a | tee output.file
If you want to include stderr, do:
program [arguments...] 2>&1 | tee outfile
2>&1 redirects channel 2 (stderr/standard error) into channel 1 (s...
Is explicitly closing files important?
In Python, if you either open a file without calling close() , or close the file but not using try - finally or the " with " statement, is this a problem? Or does it suffice as a coding practice to rely on the Python garbage-collection to close all files? For example, if one does this:
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Angular js init ng-model from default values
...ller('MyController', function($scope, $http) {
$http.get('/getCardInfo.php', function(data) {
$scope.card = data;
});
});
<input type="text" ng-model="card.description" />
If you absolutely MUST render your values into your HTML from your server, you could put them in a globa...
find without recursion
...mmand in some way that it will not recurse into the sub-directories? For example,
3 Answers
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What's the difference between “Request Payload” vs “Form Data” as seen in Chrome dev tools Network t
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PHP is evil of course. The popularity of application/x-www-form-urlencoded is defined by the popularity of PHP.
– Brian Cannard
Apr 28 '16 at 10:17
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When to encode space to plus (+) or %20?
...ponent() does in JavaScript. Unfortunately it's not what urlencode does in PHP (rawurlencode is safer).
See Also
HTML 4.01 Specification application/x-www-form-urlencoded
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How can I make a time delay in Python? [duplicate]
...print less frequently than that, because it takes time to print and handle all the buffers that entails (possibly doing a kernel context switch), and to register the alarm signal, but... yeah. A little under once per minute.
– Parthian Shot
Jun 17 '15 at 19:29
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What's the best way to send a signal to all members of a process group?
...ving it a process number, give it the negation of the group number. For example to kill every process in group 5112, use kill -TERM -- -5112.
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std::vector performance regression when enabling C++11
..., with container.push_back(Item());)
$ g++ -std=c++11 -O3 -flto regr.cpp && perf stat -r 10 ./a.out
Performance counter stats for './a.out' (10 runs):
35.426793 task-clock # 0.986 CPUs utilized ( +- 1.75% )
4 context-switches ...
Passing command line arguments to R CMD BATCH
...ommandArgs() makes processing command line arguments pretty easy.
As an example, here is a little script -- call it "myScript.R":
## myScript.R
args <- commandArgs(trailingOnly = TRUE)
rnorm(n=as.numeric(args[1]), mean=as.numeric(args[2]))
And here is what invoking it from the command line lo...