Songmu/snow.bash

## snow.bash
#!/bin/bash
# snow.bash $(date +%s)
set -e
epoch=$1
if ! [[ $epoch =~ ^([0-9]+)$ ]]; then
  echo 'Error: valid epoch required'
  echo "Usage: $0 \$epoch"
  exit 1
fi
echo $(($(expr $epoch \* 1000 - 1288834974657) << 22))
	#!/bin/bash
	# snow.bash $(date +%s)
	set -e
	epoch=$1
	if ! [[ $epoch =~ ^([0-9]+)$ ]]; then
	echo 'Error: valid epoch required'
	echo "Usage: $0 \$epoch"
	exit 1
	fi
	echo $(($(expr $epoch \* 1000 - 1288834974657) << 22))