Andrzej Rehmann hoto

## validate.sh
#!/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
}

## systemd-prblm.service
[Unit]
Description=Demonstrate Bash

[Service]
ExecStartPre=/usr/bin/bash -c "/usr/bin/systemctl set-environment MYVAR=$(( 2 + 2 ))"
ExecStart=/usr/bin/ech "2 + 2 = ${MYVAR}"
	#!/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
	}
	[Unit]
	Description=Demonstrate Bash

	[Service]
	ExecStartPre=/usr/bin/bash -c "/usr/bin/systemctl set-environment MYVAR=$(( 2 + 2 ))"
	ExecStart=/usr/bin/ech "2 + 2 = ${MYVAR}"