jonathanwork

memcached -m 64 -p 11211

jonathanwork

ln -s /z/y/x /x/y/z

jonathanwork

// use anyhow::Error; 

trait NonDis {
    fn foo() where Self: Sized {} 
    fn returns (&self ) -> Self where Self: Sized; 
    fn param(&self, other: Self) where Self: Sized {}
    fn typed<T> ( &self, x : T) where Self: Sized {}
}

struct S; 

jonathanwork

/**
 * You can edit, run, and share this code.
 * play.kotlinlang.org
 */

fun typeface() {
    val greet = "hello" 
    println(greet) 
    println(greet::class) 
    println(greet.javaClass)

jonathanwork

// this for arrays
fn chaos () -> [i32; 5]  {
    let mut chaos = [3, 5 ,4, 1, 2]; 
    
    chaos.sort();
    
    chaos
}

// this is for vectors 

jonathanwork

fn vector() -> Vec<i16> {
    let mut v : Vec<i16> = 
    Vec::<i16>::new() ; 
    
    v.push(10i16); 
    v.push(20i16); 
    v
    
}

jonathanwork

sudo fallocate -l 1G /swapfile
sudo chmod 600 /swapfile
sudo mkswap /swapfile
sudo swapon /swapfile
sudo swapon --show
sudo cp /etc/fstab /etc/fstab.bak
echo '/swapfile none swap sw 0 0' | sudo tee -a /etc/fstab
sudo sysctl vm.swappiness=10
echo 'vm.swappiness=10' | sudo tee -a /etc/sysctl.conf
sudo sysctl vm.vfs_cache_pressure=50

jonathanwork

 pmset -g log|grep -e " Sleep  " -e " Wake  " | tail -n 10 

jonathanwork

sed -i -e 's/[ \t]*//' yourfile

jonathanwork

* * * * * command
* - minute (0-59)
* - hour (0-23)
* - day of the month (1-31)
* - month (1-12)
* - day of the week (0-6, 0 is Sunday)
command - command to execute
(from left-to-right)