git:(development) ✗ sed -i "s/mnt/fstab/g" *
sed: 1: "hostname.yaml": extra characters at the end of d command
To fix this, you need to specify a backup file
git:(development) ✗ sed -i .back "s/mnt/fstab/g" *
Then remove the backup files
rm -f *.back
ref: http://stackoverflow.com/questions/4247068/sed-command-failing-on-mac-but-works-on-linux