Jeremy jw-foss

Copy ssh public key to the remote server

ssh-copy-id -i [file-to-identity_file] [user]@[host]

Sometimes Mac won't recognize your disk after you did something stupid, you should do:

# This command lists all your disks(internal & external)
$ diskutil list

# The result would be something like: 
# /dev/disk6[this number is important] (external, physical):

# After getting this number, we should do:

How to install clash on POSIX system with command line.

Pre-request: You need to know which executable your distro can run without complaining.

Go to https://github.com/Dreamacro/clash/releases to find the latest or the version you desired.
Find the correct distro version, for example, if you are running a distro with arm64 archtecture, you should download the one with armv8 suffix.
Download the executables with curl or wget at your wish.

$ curl -O [url/to/clash]

-b filename - Block special file

-c filename - Special character file

-d directoryname - Check for directory Existence

-e filename - Check for file existence, regardless of type (node, directory, socket, etc.)

-f filename - Check for regular file existence not a directory

	# SSH connection is under raw TCP and UDP, which was implemented in `ssh` command via `nc` or `socat` for different platform
	# So that in order to connect to the server via proxies, we need to as these commands to do that for us.
	# Use `man nc` or `man socat` for more detail.
	# Put this into `/Users/username/Home/.ssh/config`
	Host git.github.com
	# ProxyCommand does the magic to access the proxy server.
	ProxyCommand /bin/nc -X 5 -x 127.0.0.1:7890 %h %p

	#!/usr/bin/bash
	# Senario
	# Direcotry: /Home/uname/work/some_proj/sub_folder
	# File in /Home/uname/work/some_proj
	# Command would be like
	# sh ../some_shell.sh
	# $pwd gets the current working diretory
	BASE_DIR="$(pwd)/$(dirname $BASH_SOURCE)"

	export COOKIE_JAR='cookie-jar'
	function _curl () {
	curl --insecure -b $COOKIE_JAR -c $COOKIE_JAR -s "$@"
	}
	export -f _curl

	#!/usr/bin/env bash

	# Parse command line arguments in a pattern like --flag value

	while (( "$#" )); do
	case "$1" in
	-f\|--flag)
	statement
	shift 2
	;;

	use std::any::type_name;

	fn type_of<T>(_: T) -> &'static str {
	type_name::<T>()
	}