yuchan

忘れがちなものをメモ

tar 圧縮

tar -cvf file_B.tar dir_A
tar -cvzf file_B.tar.gz dir_A

スワップ 無効・有効切り替え（mac)

スワップを無効にする

yuchan

#include <iostream>
using namespace std;

int main()
{
  int sum = 0;
  for(int i = 1; i < 1000; i++){
    if(i % 3 == 0 || 
       i % 5 == 0)
      sum += i;

yuchan

#include <iostream>
using namespace std;

int fib(int _n){
  if(_n <= 0)
    return 0;
  else if(_n == 1)
    return 1;
  else if(_n == 2)
    return 2;

yuchan

// This is pseudo code.

size_t size;
sysctlbyname("hw.machine", NULL, &size, NULL, 0);
char *name = malloc(size);
sysctlbyname("hw.machine", name, &size, NULL, 0);
NSString *modelIdentifier = [NSString stringWithCString:name encoding:NSUTF8StringEncoding];
free(name);

yuchan

#! /bin/bash
 
# Ubuntu Provisioning Script

# basic packages
sudo apt-get update
sudo apt-get install -y openssh-server git language-pack-ja libssl-dev libsqlite3-dev build-essential nginx python-software-properties memcached

# install mysql
# warning: change the password 'root' to something else.

yuchan

#! /usr/bin/env python

def fb(n):
    dic = {}
    for num in range(1, n+1):
        dic[num] = ""
    for num in range(3, n+1)[::3]:
        dic[num] += "Fizz"
    for num in range(5, n+1)[::5]:
        dic[num] += "Buzz"

yuchan

#! /bin/bash

# create 512MB RamDisk
# (0.512(GB) * (1024^3)) / 512

rm -rf ~/Library/Caches

diskutil erasevolume HFS+ 'RamDisk' `hdiutil attach -nomount ram://1073741`

ln -s /Volumes/Ramdisk ~/Library/Caches

yuchan

#! /usr/bin/env python                                                                                                                       

import sys

DEFAULT_INDENT = 4

def main():
    argc = len(sys.argv)
    f = None # File IO                                                                                                                       

yuchan

#!/bin/bash

#Created and tested on Mac OS X only.

brew tap phinze/cask
brew install brew-cask
brew cask install basictex


if [[ $PATH =~ "texbin" ]]; then

yuchan

#!/bin/bash

#today's coding fragment

string="path-to-something:$PATH"

if [[ $PATH =~ "path-to-something" ]]; then
    echo "\$PATH contains it"
fi