juliyvchirkov

#!/usr/bin/env bash
#
# Designed by https://juliyvchirkov.github.io under MIT license
#
# Collects and prints short summary on active ssh/sftp connections to server
#
# SSH/SFTP connections
# ----------------------------------
# (3)   14.88.18.1
# (1)   14.88.18.8

juliyvchirkov

/**
 * Returns a string indicating the type of an object or a primitive
 * Throws if invoked w/o arguments
 *
 * @param  {any}    An object or a primitive whose type is to be determined
 * @return {string} The type of probed item 
 * 
 * Unlike native typeof operator identifies Null as is, not as Object 
 * Delivers the exact type of an item not limited to 9 basic types Undefined,
 * Null, Boolean, Number, BigInt, String, Function, Symbol and Object

juliyvchirkov

/**
 * Provides strict e-mail address verification
 * Includes support for unicode
 *
 * @param  string  e-mail address to verify
 * @return boolean true if e-mail address is valid, false otherwise
 */

function validEmail (email) {
    'use strict'

juliyvchirkov

#!/usr/bin/env sh
#
# Mimics the core routine of UNIX `which` command[1]
# 
# Implemented on the top of shell builtins to provide the way
# to resolve external dependencies (commands) for shell scripts
# whether external `which` command available or not
#
# Designed to be fully `sh` compatible, strictly honors POSIX standards
# and completely meets Shell Command Language specification[2], thus