Add bin/copy

bin/copy

@@ -0,0 +1,18 @@
+#!/usr/bin/env bash
+set -e
+set -u
+
+if hash pbcopy 2>/dev/null; then
+  exec pbcopy
+elif hash xclip 2>/dev/null; then
+  exec xclip -selection clipboard
+elif hash putclip 2>/dev/null; then
+  exec putclip
+else
+  rm -f /tmp/clipboard 2> /dev/null
+  if [ $# -eq 0 ]; then
+    cat > /tmp/clipboard
+  else
+    cat "$1" > /tmp/clipboard
+  fi
+fi