honux77

#include <stdlib.h>
#include <stdio.h>

int compare(const void *x, const void * y) {
	int ix = *(int*)x;
	int iy = *(int*)y;
	return ix - iy;
}

int main(void) {

honux77

#include <stdlib.h>
#include <stdio.h>

int foo(int x) { return 1; }
int main(void) {
	int *ptr[2];
	int (*ptr2)[2];
	int(*ptr3)(int);
	int x = 10;
	int arr[] = { 1, 2, 3, 4};

honux77

var friends = {};
friends.bill = {
  firstName: "Bill",
  lastName: "Gates",
  number: "(206) 555-5555",
  address: ['One Microsoft Way','Redmond','WA','98052']
};
friends.steve = {
  firstName: "Steve",
  lastName: "Jobs",

honux77

import java.sql.*;

public class Tran {
	public static void main(String[] args) throws Exception {
		Class.forName("com.mysql.jdbc.Driver");
		String host = "jdbc:mysql://192.168.56.102/popidb";
		String user = "popi";
		String pw = "db1004";
		Connection conn = DriverManager.getConnection(host, user, pw);
		conn.setAutoCommit(false);

honux77

import math
def fact(x):
    if x == 1:
        return 1
    else:
        return x * fact(x-1);

def mysin(x):
    return x - math.pow(x,3)/fact(3) + pow(x,5)/fact(5) - pow(x,7)/fact(7) \
            + math.pow(x,9)/fact(9)

honux77

#include <stdio.h>
#include <stdlib.h>

int main(void) {
    int *p = malloc(sizeof(int));
    int *q = realloc(p, sizeof(int));
    int *z = realloc(q, sizeof(int));
    *p = 1;
    *q = 2;
    *z = 3;

honux77

tmux shortcuts & cheatsheet

start new:

tmux

start new with session name:

tmux new -s myname

honux77

# Read from the file file.txt and output the tenth line to stdout.
for i in $(seq 1 10)
do
    read line
done < "file.txt"
echo $line

honux77

sed -n '10p' file.txt 

honux77

aws s3api list-objects --bucket %bucketname% --query 'sum(Contents[].Size)' --output json | awk 'BEGIN {total=0}{total+=$0}END{print total/1024/1024/1024" GB"}'