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Retrieve CPU usage and memory usage of a single process on Linux?
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Launch a program and monitor it
This form is useful if you want to benchmark an executable easily:
topp() (
$* &>/dev/null &
pid="$!"
trap ':' INT
echo 'CPU MEM'
while sleep 1; do ps --no-headers -o '%cpu,%mem' -p "$pid"; done
kill "$pid...
How to find all links / pages on a website
... not as easy as you may have intially thought. Many web pages are not well-formed. Extracting all the links programmatically that human being can "recognize" is really difficult if you need to take into account all the irregular expressions.
Good luck!
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Python: How do I make a subclass from a superclass?
...t__()
Or, same exact thing as just above, except using the zero argument form of super(), which only works inside a class definition:
class MySubClassBetter(MySuperClass):
def __init__(self):
super().__init__()
...
How to duplicate a whole line in Vim?
...the file.
:+,$g/^\s*class\s\+\i\+/t. will copy all subsequent lines of the form class xxx right after the cursor.
Reference: :help range, :help :t, :help :g, :help :m and :help :v
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Intro to GPU programming [closed]
...has this huge massively parallelized supercomputer on their desktop in the form of a graphics card GPU.
9 Answers
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Bash tool to get nth line from a file
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sed -n '2p' < file.txt
will print 2nd line
sed -n '2011p' < file.txt
2011th line
sed -n '10,33p' < file.txt
line 10 up to line 33
sed -n '1p;3p' < file.txt
1st and 3th line
and so on...
For adding lines with sed, you can check this:
sed: insert a line in a ...
Difference between two DateTimes C#?
...;& Totime=="AM" )
{
var dt1 = DateTime.Parse("1900-01-01 " + txtfromtime.Text.Trim());
var dt2 = DateTime.Parse("1900-01-02 " + txttotime.Text.Trim());
var t = dt1.Subtract(dt2);
//int temp = Convert.ToInt32(t.Hours);
//temp = t...
What's default HTML/CSS link color?
...of hyperlinks, among other things, are on track for standardization in the form of guidelines for expected default rendering behavior. In particular, taken from the section Phrasing content, the recommended default colors for unvisited and visited hyperlinks are the following:
:link { color: #0000E...
How to pass parameters in $ajax POST?
...y the way that it does for GET data. Jquery expects your data to be pre-formated to append to the request body to be sent directly across the wire.
A solution is to use the jQuery.param function to build a query string that most scripts that process POST requests expect.
$.ajax({
url: 'supe...
为AppInventor2开发自己的拓展(Extension) - App Inventor 2 拓展 - 清泛IT社区，为创新赋能！
...ic Clipboard(ComponentContainer container) { super(container.$form()); this.container = container; context = (Context) container.$context(); Log.d(LOG_TAG, "Clipboard Created"); } @SimpleProperty(category = PropertyC...