Skip to content

Instantly share code, notes, and snippets.

View Congee's full-sized avatar
🤔
Focus

Changsheng Wu Congee

🤔
Focus
View GitHub Profile
@andreyvit
andreyvit / tmux.md
Created June 13, 2012 03:41
tmux cheatsheet

tmux cheat sheet

(C-x means ctrl+x, M-x means alt+x)

Prefix key

The default prefix is C-b. If you (or your muscle memory) prefer C-a, you need to add this to ~/.tmux.conf:

remap prefix to Control + a

@matthewlehner
matthewlehner / autopgsqlbackup
Created July 11, 2012 16:10
Auto PostgreSQL backup script.
#!/bin/bash
#
# PostgreSQL Backup Script Ver 1.0
# http://autopgsqlbackup.frozenpc.net
# Copyright (c) 2005 Aaron Axelsen <[email protected]>
#
# This script is based of the AutoMySQLBackup Script Ver 2.2
# It can be found at http://sourceforge.net/projects/automysqlbackup/
#
# The PostgreSQL changes are based on a patch agaisnt AutoMySQLBackup 1.9
@cowboy
cowboy / sudo-keepalive-example.sh
Created July 15, 2012 20:55
Bash: Sudo keep-alive (good for long-running scripts that need sudo internally but shouldn't be run with sudo)
#!/bin/bash
# Might as well ask for password up-front, right?
sudo -v
# Keep-alive: update existing sudo time stamp if set, otherwise do nothing.
while true; do sudo -n true; sleep 60; kill -0 "$$" || exit; done 2>/dev/null &
# Example: do stuff over the next 30+ mins that requires sudo here or there.
function wait() {
@yorickvP
yorickvP / gist:3171926
Created July 24, 2012 19:05
generic C/C++ project makefile template
ifdef VERBOSE
Q =
E = @true
else
Q = @
E = @echo
endif
CFILES := $(shell find src -mindepth 1 -maxdepth 4 -name "*.c")
CXXFILES := $(shell find src -mindepth 1 -maxdepth 4 -name "*.cpp")
@afair
afair / tmux.cheat
Last active June 3, 2024 23:26
Tmux Quick Reference & Cheat sheet - 2 column format for less scrolling!
========================================== ==========================================
TMUX COMMAND WINDOW (TAB)
========================================== ==========================================
List tmux ls List ^b w
New new -s <session> Create ^b c
Attach att -t <session> Rename ^b , <name>
Rename rename-session -t <old> <new> Last ^b l (lower-L)
Kill kill-session -t <session> Close ^b &
@seberg
seberg / rolling_window.py
Created October 10, 2012 14:38
Multidimensional rolling_window for numpy
def rolling_window(array, window=(0,), asteps=None, wsteps=None, axes=None, toend=True):
"""Create a view of `array` which for every point gives the n-dimensional
neighbourhood of size window. New dimensions are added at the end of
`array` or after the corresponding original dimension.
Parameters
----------
array : array_like
Array to which the rolling window is applied.
window : int or tuple
@mattratleph
mattratleph / vimdiff.md
Last active March 17, 2025 13:07 — forked from roothybrid7/vimdiff_cheet.md
vimdiff cheat sheet

vimdiff cheat sheet

##git mergetool

In the middle file (future merged file), you can navigate between conflicts with ]c and [c.

Choose which version you want to keep with :diffget //2 or :diffget //3 (the //2 and //3 are unique identifiers for the target/master copy and the merge/branch copy file names).

:diffupdate (to remove leftover spacing issues)

:only (once you’re done reviewing all conflicts, this shows only the middle/merged file)

@jdeoliveira
jdeoliveira / gist:4080656
Created November 15, 2012 19:28
Dump/restore a postgres database in binary format for distribution
/Library/PostgreSQL/9.1/bin/pg_dump --host localhost --port 5432 --username <USERNAME> -b -c -E UTF-8 --no-owner --no-privileges --no-tablespaces --clean --schema public -F c -Z 9 -f <BACKUPFILENAME> <DATABASENAME>
/Library/PostgreSQL/9.1/bin/pg_restore --host localhost --port 5432 --username <USERNAME> --dbname <DATABASENAME> --no-owner --no-privileges --no-tablespaces --clean --schema public "<BACKUPFILENAME>"
@tausen
tausen / gist:4261887
Created December 11, 2012 20:30
pthread, sem_wait, sem_post example
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <pthread.h>
#include <unistd.h>
#include <semaphore.h>
sem_t semaphore;
void threadfunc() {
@larsmans
larsmans / kmeans.py
Created February 14, 2013 13:38
k-means clustering in pure Python
#!/usr/bin/python
#
# K-means clustering using Lloyd's algorithm in pure Python.
# Written by Lars Buitinck. This code is in the public domain.
#
# The main program runs the clustering algorithm on a bunch of text documents
# specified as command-line arguments. These documents are first converted to
# sparse vectors, represented as lists of (index, value) pairs.
from collections import defaultdict