OS X’s open command is great and I use it many times a day. But several times I’ve stumbled through some command that outputs something only to be reminded once again that open doesn’t support piping of input. Let’s fix that.

# Put a dash at the end of open to use stdin as arguments
# usage: echo "TextEdit" | open -a -
for last; do true; done
if [ "$last" == '-' ]; then
  cmd=`echo $@ | sed -e "s/-$/${arg}/"`
  /usr/bin/open $cmd
  /usr/bin/open $@

This add a check to open: If the last argument is a dash (-), then use STDIN as the argument to the original open.

Put it somewhere that’s in your $PATH before /usr/bin is and you’re good!