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How to determine whether a given Linux is 32 bit or 64 bit?
... I have a 32 bit kernel on 64 bit hardware and get "x86_64" from 'uname -m' (on Debian). The man page for uname says that -m shows the machine hardware name, so that seems correct.
– Tony Meyer
Sep 4 '09 at 20:33
...
Why are dashes preferred for CSS selectors / HTML attributes?
...ops.
Also, using hyphens allows you to take advantage of the |= attribute selector, which selects any element containing the text, optionally followed by a dash:
span[class|="em"] { font-style: italic; }
This would make the following HTML elements have italic font-style:
<span class="em">...
Where are the PostgreSQL logs on macOS?
...
Just ask your database:
SELECT
*
FROM
pg_settings
WHERE
category IN( 'Reporting and Logging / Where to Log' , 'File Locations')
ORDER BY
category,
name;
In my case, it's in "/Library/PostgreSQL/8.4/data/pg_log"
...
How to style SVG with external CSS?
...pport SVG
</object>
<script>
var svgHolder = document.querySelector('object#dynamic-svg');
svgHolder.onload = function () {
var svgDocument = svgHolder.contentDocument;
var style = svgDocument.createElementNS("http://www.w3.org/2000/svg", "style");
// Now...
Random strings in Python
...
Generating strings from (for example) lowercase characters:
import random, string
def randomword(length):
letters = string.ascii_lowercase
return ''.join(random.choice(letters) for i in range(length))
Results:
>>> randomword...
How far can memory leaks go?
...you unload the program.
So you can consider this to be another case apart from OSes not reclaiming memory either because it's buggy or because the embedded OS is designed to do so.
I remember one more example. Customer Information Control System (CICS), a transaction server which runs primarily on...
Static linking vs dynamic linking
...amic linking, because their memory is small enough to make the RAM savings from dynamic linking very attractive. Full blown consumer PCs have, as Mark notes, enormous resources, and you can probably let the convenience issues drive your thinking on this matter.
To address the performance and effi...
Error executing command 'ant' on Mac OS X 10.9 Mavericks when building for Android with PhoneGap/Cor
...anagers, the problem can simply be fixed by downloading the binary release from the apache ANT web site and adding the binary to your system PATH.
For example, on Mountain Lion, in ~/.bash_profile and ~/.bashrc my path was setup like this:
export ANT_HOME="/usr/share/ant"
export PATH=$PATH:$ANT_...
Pinging servers in Python
...return true (on Windows) if you get a "destination host unreachable" reply from a different host.
– ikrase
Dec 29 '16 at 20:11
...
How can I install MacVim on OS X?
...
Step 1. Install homebrew from here: http://brew.sh
Step 1.1. Run export PATH=/usr/local/bin:$PATH
Step 2. Run brew update
Step 3. Run brew install vim && brew install macvim
Step 4. Run brew link macvim
You now have the latest versions of v...