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Creating temporary files in bash
...many shell scripts take the name of the program with
the pid as a suffix and use that as a temporary file name. This kind
of naming scheme is predictable and the race condition it creates is
easy for an attacker to win. A safer, though still inferior, approach
is to make a temporary directo...
Why is #!/usr/bin/env bash superior to #!/bin/bash?
...ven seen one enterprising individual suggest using #!/bin/bash was wrong and bash functionality would be lost by doing so.
...
How to inspect the return value of a function in GDB?
...
I imagine there are better ways to do it, but the finish command executes until the current stack frame is popped off and prints the return value -- given the program
int fun() {
return 42;
}
int main( int argc, char *v[] ) {
fun();
return 0;
}
You can debug it as such ...
what does -webkit-transform: translate3d(0,0,0); exactly do? Apply to body?
...rocessing unit
(GPU) to make pixels fly. Web applications, on the other hand, run in
the context of the browser, which lets the software do most (if not
all) of the rendering, resulting in less horsepower for transitions.
But the Web has been catching up, and most browser vendors now provide...
How can I efficiently download a large file using Go?
...
Note that io.Copy reads 32kb (maximum) from input and writes them to output, then repeats. So don't worry about memory.
– Moshe Revah
Jul 28 '12 at 0:11
1
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How to create a temporary directory?
I use to create a tempfile , delete it and recreate it as a directory:
4 Answers
4
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How to do an instanceof check with Scala(Test)
...
Not sure if I understand correctly, but it should be the same: isInstanceOf[TraitName].
– agilesteel
Dec 29 '17 at 12:13
...
warning about too many open figures
... interface (matplotlib.pyplot.figure) are retained until explicitly closed and may consume too much memory.
6 Answers
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How to add an auto-incrementing primary key to an existing table, in PostgreSQL?
...e with existing data. Is there a way to add a primary key without deleting and re-creating the table?
4 Answers
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How can I get the sha1 hash of a string in node.js?
...
See the crypto.createHash() function and the associated hash.update() and hash.digest() functions:
var crypto = require('crypto')
var shasum = crypto.createHash('sha1')
shasum.update('foo')
shasum.digest('hex') // => "0beec7b5ea3f0fdbc95d0dd47f3c5bc275da8a33...