hoshang82

hoshang82 / validate.sh

Created April 9, 2018 10:08 — forked from hrwgc/validate.sh

bash wget - check if file exists at url before downloading

	#!/bin/bash

	# simple function to check http response code before downloading a remote file
	# example usage:
	# if `validate_url $url >/dev/null`; then dosomething; else echo "does not exist"; fi


	function validate_url(){
	if [[ `wget -S --spider $1 2>&1 \| grep 'HTTP/1.1 200 OK'` ]]; then echo "true"; fi
	}

hoshang82 / is_installed.sh

Created April 9, 2018 07:31 — forked from JamieMason/is_installed.sh

Check if a program exists from a bash script.Thanks to twitter.com/joshnesbitt and twitter.com/mheap for the help with detecting npm packages.

	#!/bin/bash

	# Functions ==============================================

	# return 1 if global command line program installed, else 0
	# example
	# echo "node: $(program_is_installed node)"
	function program_is_installed {
	# set to 1 initially
	local return_=1

hoshang82 / is_installed.sh

Created April 9, 2018 07:31 — forked from JamieMason/is_installed.sh

Check if a program exists from a bash script.Thanks to twitter.com/joshnesbitt and twitter.com/mheap for the help with detecting npm packages.

	#!/bin/bash

	# Functions ==============================================

	# return 1 if global command line program installed, else 0
	# example
	# echo "node: $(program_is_installed node)"
	function program_is_installed {
	# set to 1 initially
	local return_=1