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@rbtbr
rbtbr / quadratic_equation.hs
Created November 26, 2009 09:27
Haskell Quadratic Equation
-- ax^2 + bx + c = 0
qEquation :: (Float, Float, Float) -> (Float, Float)
qEquation (a, b, c) = (x1, x2)
where
x1 = e + sqrt d / (2 * a)
x2 = e - sqrt d / (2 * a)
d = b * b - 4 * a * c
e = - b / (2 * a)
@miyukino
miyukino / MergeSort.scm
Created May 26, 2013 08:41
Scheme: Merge Sort
;; Exp. (merge '(1 3 5 7 8 9 10) '(2 4 6)) ==> (1 2 3 4 5 6 7 8 9 10)
(define (merge L M)
(if (null? L) M
(if (null? M) L
(if (< (car L) (car M))
(cons (car L) (merge (cdr L) M))
(cons (car M) (merge (cdr M) L))))))
;; split helper functions
(define (odd L)
@ffunenga
ffunenga / generic-makefile
Created June 10, 2013 19:55
An easily-customizable makefile template for C/C++ programs. Once customized, without any changes it can be used to build all the same kind of programs, even when source files are renamed, added or removed. (http://sourceforge.net/projects/gcmakefile/)
#############################################################################
#
# Generic Makefile for C/C++ Program
#
# License: GPL (General Public License)
# Author: whyglinux <whyglinux AT gmail DOT com>
# Date: 2006/03/04 (version 0.1)
# 2007/03/24 (version 0.2)
# 2007/04/09 (version 0.3)
# 2007/06/26 (version 0.4)
@dergachev
dergachev / ssh-forward-clipboard.md
Last active March 18, 2025 13:30
Forward your clipboard via SSH reverse tunnels

Exposing your clipboard over SSH

I frequently administer remote servers over SSH, and need to copy data to my clipboard. If the text I want to copy all fits on one screen, then I simply select it with my mouse and press CMD-C, which asks relies on m y terminal emulator (xterm2) to throw it to the clipboard.

This isn't practical for larger texts, like when I want to copy the whole contents of a file.

If I had been editing large-file.txt locally, I could easily copy its contents by using the pbcopy command:

@tejainece
tejainece / cgo1.go
Last active October 26, 2024 04:18
Examples of calling C code from Golang
package main
//#include<stdio.h>
//void inC() {
// printf("I am in C code now!\n");
//}
import "C"
import "fmt"
func main() {
@joostrijneveld
joostrijneveld / gpg2qrcodes.sh
Created May 20, 2014 19:43
Producing printable QR codes for persistent storage of GPG private keys
# Heavily depends on:
# libqrencode (fukuchi.org/works/qrencode/)
# paperkey (jabberwocky.com/software/paperkey/)
# zbar (zbar.sourceforge.net)
# Producing the QR codes:
# Split over 4 codes to ensure the data per image is not too large.
gpg --export-secret-key KEYIDGOESHERE | paperkey --output-type raw | base64 > temp
split temp -n 4 IMG
for f in IMG*; do cat $f | qrencode -o $f.png; done

There are 3 plugins for generating to create a JAR-File in maven:

  • maven-jar-plugin
  • maven-assembly-plugin
  • maven-shade-plugin

maven-jar-plugin:This plugin provides the capability to build and sign jars.But it just compiles the java files under src/main/java and /src/main/resources/.It doesn't include the dependencies JAR files.

<!--exclude all xml files from the jar-->
<plugin>
    <groupId>org.apache.maven.plugins</groupId>
@evantoli
evantoli / GitConfigHttpProxy.md
Last active April 29, 2025 14:42
Configure Git to use a proxy

Configure Git to use a proxy

In Brief

You may need to configure a proxy server if you're having trouble cloning or fetching from a remote repository or getting an error like unable to access '...' Couldn't resolve host '...'.

Consider something like:

@dogancelik
dogancelik / bookmarks.sql
Last active November 24, 2023 06:32
Export Firefox Mobile Bookmarks #Android
/* bookmarks are stored in “/data/data/org.mozilla.firefox/files/mozilla/…….default/browser.db” */
SELECT url, created
FROM bookmarks
WHERE COALESCE(url, '') <> ''
ORDER BY created ASC
@JonathanPorta
JonathanPorta / dd-examples.md
Last active January 29, 2025 10:34
DD Backup, Compress, and Restore

Backup/Image

Make sure the if value is correct! If doing this over SSH then open a TMUX session first... or else...

dd if=/dev/YOUR-DEVICE conv=sync,noerror bs=64K | gzip -c  > /home/portaj/macbook.img.gz

NOTE: You might not want to compress the image. It just means you have to uncompress it later to mount it. If you're planning to access the data soon, or frequently, don't compress it.

Saving a copy of the drive geometry

Save it in the same directory as the compressed image so later on if you decide you want to mount or extract data from the image you can see the partition structure without having to decompress the whole image. There might be some other ways to mount a compressed image.