Rewrite bin/transfer

bin/transfer

@@ -1,16 +1,22 @@
 #!/usr/bin/env bash
 
+if (( $# == 0 )); then
+  >&2 echo "Forgot to specify a destination filename. Aborting."
+  exit 1
+fi
+
 # Upload file/stdin to transfer.sh
 url="https://transfer.sh"
 tmpfile=$(mktemp -t transferXXX)
-if [[ -t 0 ]]; then
+cleanup() { rm -f "$tmpfile"; }
+trap cleanup EXIT
+
+if tty -s; then
   basefile=$(basename "$1" | sed -e 's/[^a-zA-Z0-9._-]/-/g')
   curl --progress-bar --upload-file "$1" "$url/$basefile" >>"$tmpfile"
 else
   curl --progress-bar --upload-file "-" "$url/$1" >>"$tmpfile"
 fi
 
+cat "$tmpfile" | clip
 cat "$tmpfile"
-rm -f "$tmpfile"
-
-# vim:set ft=sh: