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Copy folder recursively, excluding some folders
...m trying to write a simple bash script that will copy the entire contents of a folder including hidden files and folders into another folder, but I want to exclude certain specific folders. How could I achieve this?
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Understanding the Use of ColorMatrix and ColorMatrixColorFilter to Modify a Drawable's Hue
I'm working on a UI for an app, and I'm attempting to use grayscale icons, and allow the user to change the theme to a color of their choosing. To do this, I'm trying to just apply a ColorFilter of some sort to overlay a color on top of the drawable. I've tried using PorterDuff.Mode.MULTIPLY, and it...
Best way to select random rows PostgreSQL
...E FUNCTION f_random_sample(_limit int = 1000, _gaps real = 1.03)
RETURNS SETOF big AS
$func$
DECLARE
_surplus int := _limit * _gaps;
_estimate int := ( -- get current estimate from system
SELECT c.reltuples * _gaps
FROM pg_class c
WHERE c.oid = 'big'::regclass...
PHP append one array to another (not array_push or +)
...b')
Will not work, because the + operator does not actually merge them. If they $a has the same keys as $b, it won't do anything.
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Rank function in MySQL
...:= 0) part allows the variable initialization without requiring a separate SET command.
Test case:
CREATE TABLE person (id int, first_name varchar(20), age int, gender char(1));
INSERT INTO person VALUES (1, 'Bob', 25, 'M');
INSERT INTO person VALUES (2, 'Jane', 20, 'F');
INSERT INTO person VALUE...
What is RSS and VSZ in Linux memory management
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RSS is the Resident Set Size and is used to show how much memory is allocated to that process and is in RAM. It does not include memory that is swapped out. It does include memory from shared libraries as long as the pages from those libraries...
Get Image size WITHOUT loading image into memory
...("jpeg", (0,0) + self.size, 0, (rawmode, ""))]
# self.__offset = self.fp.tell()
break
s = self.fp.read(1)
elif i == 0 or i == 65535:
# padded marker or junk; move on
s = "\xff"
else:
raise SyntaxError("no...
What's the difference between [ and [[ in Bash? [duplicate]
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FWIW, reference for the set of conditional expressions (like -f, -z etc) that can go inside [ or [[ is at Bash Reference Manual: Bash Conditional Expressions
– ShreevatsaR
May 2 '18 at 19:29
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Have bash script answer interactive prompts [duplicate]
...tically handle prompts that would normally be presented to the user with default actions? Currently I am using a bash script to call an in-house tool that will display prompts to the user (prompting for Y/N) to complete actions, however the script I'm writing needs to be completely "hands-off", so ...
Pointers in C: when to use the ampersand and the asterisk?
... converted from "N-element array of T" to "pointer to T", and its value is set to point to the first element in the array. The exceptions to this rule are when the array expression appears as an operand of either the & or sizeof operators, or when it is a string literal being used as an initial...