copy the last command to a file

snipit.sh

snipit() {
  [ ! -z "${1}" ] && snip_file="${1}" || snip_file='snippets.sh'
  echo "" >> $snip_file
  read -p "Enter comment: " comment
  [ ! -z "${comment}" ] && echo "# ${comment}" >> $snip_file
  fc -ln -1 | sed '1s/^[[:space:]]*//' >> $snip_file
  [ ! -z "${comment}" ] && tail -n 2 $snip_file || tail -n 1 $snip_file
}