Modified version of the example for alias to https://transfer.sh/

transfer.plugin.zsh

transfer() { 
	if [ $# -eq 0 ]; then 
		echo "No arguments specified. Usage:\n\ttransfer /tmp/test.md"; 
		return 1; 
	fi 
	tmpfile=$( mktemp -t transferXXX ); 
	if tty -s; then 
		basefile=$(basename "$1" | sed -e 's/[^a-zA-Z0-9._-]/-/g'); 
		curl --progress-bar --upload-file "$1" "https://transfer.sh/$basefile" >> $tmpfile; 
	else 
		curl --progress-bar --upload-file "-" "https://transfer.sh/$1" >> $tmpfile ; 
	fi;
	cat $tmpfile | pbcopy;
	link=$(cat $tmpfile);
	echo "Link copied to clipboard: ${link}"
	rm -f $tmpfile; 
} 

alias transfer=transfer